diff --git a/src/catalan/LexiconCat.gf b/src/catalan/LexiconCat.gf
index bbdc4a3c..d681c231 100644
--- a/src/catalan/LexiconCat.gf
+++ b/src/catalan/LexiconCat.gf
@@ -10,7 +10,7 @@ flags
 oper
     regFN : Str -> N = \s -> femN (regN s) ;
     regMN : Str -> N = \s -> regN s ;
-	irregMN : Str -> Str -> N = \pa,pans -> M.mkNounIrreg pa pans masculine ** {lock_N=<>} ;
+	irregMN : Str -> Str -> N = \pa,pans -> M.mkNounIrreg pa pans masculine ** {relType=D.NRelPrep D.P_de; lock_N=<>} ;
 	saberV : V = verbV (saber_99 "saber") ;
 
 lin
diff --git a/src/catalan/ParadigmsCat.gf b/src/catalan/ParadigmsCat.gf
index c60a4f27..62713fd7 100644
--- a/src/catalan/ParadigmsCat.gf
+++ b/src/catalan/ParadigmsCat.gf
@@ -348,11 +348,11 @@ oper
   mkPrep p = {s = p ; c = Acc ; isDir = False ; lock_Prep = <>} ;
 
 
-  mk2N x y g = mkNounIrreg x y g ** {lock_N = <>} ;
-  regN x = mkNomReg x ** {lock_N = <>} ;
-  compN x y = {s = \\n => x.s ! n ++ y ; g = x.g ; lock_N = <>} ;
-  femN x = {s = x.s ; g = feminine ; lock_N = <>} ;
-  mascN x = {s = x.s ; g = masculine ; lock_N = <>} ;
+  mk2N x y g = mkNounIrreg x y g ** {relType = NRelPrep P_de; lock_N = <>} ;
+  regN x = mkNomReg x ** {relType = NRelPrep P_de; lock_N = <>} ;
+  compN x y = {s = \\n => x.s ! n ++ y ; g = x.g ; relType = x.relType ; lock_N = <>} ;
+  femN x = x ** {g = feminine} ;
+  mascN x = x ** {g = masculine} ;
 
   mkN2 = \n,p -> n ** {lock_N2 = <> ; c2 = p} ;
   deN2 n = mkN2 n genitive ;
@@ -525,7 +525,7 @@ oper
 
   mkN = overload {
     mkN : (llum : Str) -> N = regN ;
-    mkN : Str -> Gender -> N = \s,g -> {s = (regN s).s ; g = g ; lock_N = <>};
+    mkN : Str -> Gender -> N = \s,g -> (regN s) ** {g = g};
     mkN : (disc,discos : Str) -> Gender -> N = mk2N
     } ;
   regN : Str -> N ;
diff --git a/src/french/ExtendFre.gf b/src/french/ExtendFre.gf
index 61ea2f9d..a77fead5 100644
--- a/src/french/ExtendFre.gf
+++ b/src/french/ExtendFre.gf
@@ -59,7 +59,16 @@ lin ApposNP np1 np2 = np1 ** {    -- guessed by KA
                               } ;
     } ;
 
-lin CompoundN a b = lin N {s = \\n => b.s ! n ++ a.s ! Sg ; g = b.g} ; -- connessione internet = internet connection
+lin CompoundN a b = lin N {
+      s = \\n => b.s ! n ++
+                 case b.relType of {
+                   NRelPrep p => prepCase (CPrep p) ;  -- tasa de suicidio
+                   NRelNoPrep => []                    -- connessione internet = internet connection
+                 } ++
+                 a.s ! Sg ;
+      g = b.g ;
+      relType = b.relType
+      } ;
 
 lin UseDAP = \dap ->
       let
diff --git a/src/french/ParadigmsFre.gf b/src/french/ParadigmsFre.gf
index 6aceb83d..8310ac1d 100644
--- a/src/french/ParadigmsFre.gf
+++ b/src/french/ParadigmsFre.gf
@@ -393,16 +393,16 @@ oper
   regGenN : Str -> Gender -> N ;
   regN : Str -> N ;
   mk2N  : (oeil,yeux : Str) -> Gender -> N ;
-  mk2N x y g = mkCNomIrreg x y g ** {lock_N = <>} ;
+  mk2N x y g = mkCNomIrreg x y g ** {relType = NRelPrep P_de; lock_N = <>} ;
   regN x = regGenN x g where {
     g = case <x : Str> of {
      _ + ("e" | "ion") => Fem ;
      _ => Masc
      }
     } ;
-  regGenN x g = mkNomReg x g ** {lock_N = <>} ;
+  regGenN x g = mkNomReg x g ** {relType = NRelPrep P_de; lock_N = <>} ;
   compN : N -> Str -> N ;
-  compN x y = {s = \\n => x.s ! n ++ y ; g = x.g ; lock_N = <>} ;
+  compN x y = {s = \\n => x.s ! n ++ y ; g = x.g ; relType = NRelPrep P_de ; lock_N = <>} ;
 
   mkN = overload {
     mkN : Str -> N = regN ;
diff --git a/src/italian/ParadigmsIta.gf b/src/italian/ParadigmsIta.gf
index 22647496..36165db9 100644
--- a/src/italian/ParadigmsIta.gf
+++ b/src/italian/ParadigmsIta.gf
@@ -378,11 +378,11 @@ oper
   in_Prep = {s = [] ; c = CPrep P_in ; isDir = False ; lock_Prep = <>} ;
   su_Prep = {s = [] ; c = CPrep P_su ; isDir = False ; lock_Prep = <>} ;
 
-  mk2N x y g = mkNounIrreg x y g ** {lock_N = <>} ;
-  regN x = mkNomReg x ** {lock_N = <>} ;
-  compN x y = {s = \\n => x.s ! n ++ y ; g = x.g ; lock_N = <>} ;
-  femN x = {s = x.s ; g = feminine ; lock_N = <>} ;
-  mascN x = {s = x.s ; g = masculine ; lock_N = <>} ;
+  mk2N x y g = mkNounIrreg x y g ** {relType=NRelPrep P_da; lock_N = <>} ;
+  regN x = mkNomReg x ** {relType=NRelPrep P_da; lock_N = <>} ;
+  compN x y = x ** {s = \\n => x.s ! n ++ y} ;
+  femN x = {s = x.s ; g = feminine ; relType=NRelPrep P_da; lock_N = <>} ;
+  mascN x = {s = x.s ; g = masculine ; relType=NRelPrep P_da; lock_N = <>} ;
 
 
   mk2N2 = \n,p -> n ** {lock_N2 = <> ; c2 = p} ;
@@ -518,7 +518,7 @@ oper
 
   mkN = overload {
     mkN : (cane : Str) -> N = regN ;
-    mkN : (carne : Str) -> Gender -> N = \n,g -> {s = (regN n).s ; g = g ; lock_N = <>} ;
+    mkN : (carne : Str) -> Gender -> N = \n,g -> (regN n) ** {g = g} ;
     mkN : (uomo,uomini : Str) -> Gender -> N = mk2N ;
     mkN : N -> Str -> N = compN
     } ;
diff --git a/src/portuguese/ExtendPor.gf b/src/portuguese/ExtendPor.gf
index c91b169a..50a696e6 100644
--- a/src/portuguese/ExtendPor.gf
+++ b/src/portuguese/ExtendPor.gf
@@ -67,10 +67,14 @@ concrete ExtendPor of Extend = CatPor ** ExtendRomanceFunctor -
 
   lin
     CompoundN noun noun2 = { -- order is different because that's needed for correct translation from english
-      s = \\n => noun2.s ! n
-        ++ variants {"de" ; genForms "do" "da" ! noun.g}
-        ++ noun.s ! Sg ;
-      g = noun2.g
+      s = \\n => noun2.s ! n ++
+                 case noun2.relType of {
+                   NRelPrep p => artDef True noun.g Sg (CPrep p) ;  -- tasa de suicidio
+                   NRelNoPrep => []                        -- connessione internet = internet connection
+                 } ++
+                 noun.s ! Sg ;
+      g = noun2.g ;
+      relType = noun2.relType
       } ;
 
     CompoundAP noun adj = {
diff --git a/src/portuguese/ParadigmsPor.gf b/src/portuguese/ParadigmsPor.gf
index d62697fd..fe1fbd93 100644
--- a/src/portuguese/ParadigmsPor.gf
+++ b/src/portuguese/ParadigmsPor.gf
@@ -102,7 +102,7 @@ oper
 --2 Nouns
 
   regN : Str -> N ; --%
-  regN x = lin N (mkNomReg x) ;
+  regN x = lin N (mkNomReg x ** {relType=NRelPrep P_de}) ;
 
   femN  : N -> N ; --%
   femN n = n ** {g = feminine} ;
@@ -111,7 +111,7 @@ oper
   mascN n = n ** {g = masculine} ;
 
   mk2N : (bastão, bastões : Str) -> Gender -> N ; --%
-  mk2N x y g = lin N (mkNounIrreg x y g) ;
+  mk2N x y g = lin N (mkNounIrreg x y g ** {relType=NRelPrep P_de}) ;
 
   -- The regular function takes the singular form and the gender, and
   -- computes the plural and the gender by a heuristic (see MorphoPor
diff --git a/src/romance/CatRomance.gf b/src/romance/CatRomance.gf
index 4fe38778..4426fca5 100644
--- a/src/romance/CatRomance.gf
+++ b/src/romance/CatRomance.gf
@@ -110,9 +110,9 @@ incomplete concrete CatRomance of Cat = CommonX - [SC,Pol,MU]
     A  = {s : AForm => Str ; compar : ComparAgr => Str ; isPre : Bool ; copTyp : CopulaType ; isDeg : Bool} ;
     A2 = {s : AForm => Str ; compar : ComparAgr => Str ; c2 : Compl ; copTyp : CopulaType ; isDeg : Bool} ;
 
-    N  = Noun ;
-    N2 = Noun  ** {c2 : Compl} ;
-    N3 = Noun  ** {c2,c3 : Compl} ;
+    N  = Noun  ** {relType : NRelType};
+    N2 = Noun  ** {relType : NRelType; c2 : Compl} ;
+    N3 = Noun  ** {relType : NRelType; c2,c3 : Compl} ;
     GN, PN = {s : Str ; g : Gender} ;
     SN = {s : Gender => Str ; pl : Str} ;
     LN = {s  : Str;
diff --git a/src/romance/DiffRomance.gf b/src/romance/DiffRomance.gf
index acb5237d..105fe90b 100644
--- a/src/romance/DiffRomance.gf
+++ b/src/romance/DiffRomance.gf
@@ -140,6 +140,8 @@ interface DiffRomance = open CommonRomance, Prelude in {
 param
   Case = Nom | Acc | CPrep Prepos ;
 
+  NRelType = NRelPrep Prepos | NRelNoPrep ; -- How do build a compound noun
+
 oper
   Verb = {s : VF => Str ; vtyp : VType ; p : Str} ;
 
diff --git a/src/romance/ExtendRomanceFunctor.gf b/src/romance/ExtendRomanceFunctor.gf
index 8e752710..cc68dbbc 100644
--- a/src/romance/ExtendRomanceFunctor.gf
+++ b/src/romance/ExtendRomanceFunctor.gf
@@ -127,7 +127,7 @@ incomplete concrete ExtendRomanceFunctor of Extend =
     ExistPluralCN cn = ExistNP (DetCN (DetQuant IndefArt NumPl) cn) ;
     AdvIsNP adv np = mkClause adv.s False False np.a (UseComp_estar (CompNP np)) ;
     AdvIsNPAP adv np ap = -- <aquí:Adv> está <documentada:AP> <la examinación:NP>
-      let emptyN : N = lin N {s = \\_ => [] ; g = np.a.g} ; -- To match the gender of the N
+      let emptyN : N = lin N {s = \\_ => [] ; relType = NRelNoPrep ; g = np.a.g} ; -- To match the gender of the N
           indef : Quant = IndefArt ** {s = \\b,n,g,c => []} ;
           det : Det = case np.a.n of {Sg => DetQuant indef NumSg ; Pl => DetQuant indef NumPl} ;
           apAsNP : NP = DetCN det (AdjCN ap (UseN emptyN)) ; -- NP where the string comes only from AP
@@ -166,7 +166,16 @@ incomplete concrete ExtendRomanceFunctor of Extend =
     ComplGenVV = variants {} ;     -- VV -> Ant -> Pol -> VP -> VP ; -- want not to have slept
     ComplSlashPartLast = ComplSlash ;
 
-    CompoundN a b = lin N {s = \\n => b.s ! n ++ a.s ! Sg ; g = b.g} ; -- connessione internet = internet connection
+    CompoundN a b = lin N {
+      s = \\n => b.s ! n ++
+                 case b.relType of {
+                   NRelPrep p => prepCase (CPrep p) ;  -- tasa de suicidio
+                   NRelNoPrep => []                    -- connessione internet = internet connection
+                 } ++
+                 a.s ! Sg ;
+      g = b.g ;
+      relType = b.relType
+      } ;
     CompoundAP = variants {} ;     -- N -> A -> AP ; -- language independent / language-independent
 
   lin
diff --git a/src/romance/NounRomance.gf b/src/romance/NounRomance.gf
index 0fe65659..c9586cbf 100644
--- a/src/romance/NounRomance.gf
+++ b/src/romance/NounRomance.gf
@@ -158,11 +158,13 @@ incomplete concrete NounRomance of Noun =
     ComplN2 f x = {
       s = \\n => f.s ! n ++ appCompl f.c2 x ;
       g = f.g ;
+      relType = f.relType
       } ;
 
     ComplN3 f x = {
       s = \\n => f.s ! n ++ appCompl f.c2 x ;
       g = f.g ;
+      relType = f.relType ;
       c2 = f.c3
       } ;
 
diff --git a/src/spanish/ExtendSpa.gf b/src/spanish/ExtendSpa.gf
index c853586b..dd8bdd95 100644
--- a/src/spanish/ExtendSpa.gf
+++ b/src/spanish/ExtendSpa.gf
@@ -73,10 +73,14 @@ concrete ExtendSpa of Extend = CatSpa ** ExtendRomanceFunctor -
          (predV (mkV "existir"))) ;
 
     CompoundN noun noun2 = { -- order is different because that's needed for correct translation from english
-      s = \\n => noun2.s ! n
-        ++ variants {"de" ; genForms "del" "de la" ! noun.g}
-        ++ noun.s ! Sg ;
-      g = noun2.g
+      s = \\n => noun2.s ! n ++
+                 case noun2.relType of {
+                   NRelPrep p => prepCase (CPrep p) ;  -- tasa de suicidio
+                   NRelNoPrep => []                    -- connessione internet = internet connection
+                 } ++
+                 noun.s ! Sg ;
+      g = noun2.g ;
+      relType = noun2.relType
       } ;
 
     CompoundAP noun adj = {
diff --git a/src/spanish/ParadigmsSpa.gf b/src/spanish/ParadigmsSpa.gf
index 89c7f0f6..d2ac452d 100644
--- a/src/spanish/ParadigmsSpa.gf
+++ b/src/spanish/ParadigmsSpa.gf
@@ -380,11 +380,11 @@ oper
   } ;
 
 
-  mk2N x y g = mkNounIrreg x y g ** {lock_N = <>} ;
-  regN x = mkNomReg x ** {lock_N = <>} ;
-  compN x y = {s = \\n => x.s ! n ++ y ; g = x.g ; lock_N = <>} ;
-  femN x = {s = x.s ; g = feminine ; lock_N = <>} ;
-  mascN x = {s = x.s ; g = masculine ; lock_N = <>} ;
+  mk2N x y g = mkNounIrreg x y g ** {relType=NRelPrep P_de; lock_N = <>} ;
+  regN x = mkNomReg x ** {relType=NRelPrep P_de; lock_N = <>} ;
+  compN x y = x ** {s = \\n => x.s ! n ++ y} ;
+  femN x = {s = x.s ; g = feminine ; relType=NRelPrep P_de; lock_N = <>} ;
+  mascN x = {s = x.s ; g = masculine ; relType=NRelPrep P_de; lock_N = <>} ;
 
   mkN2 = \n,p -> n ** {lock_N2 = <> ; c2 = p} ;
   deN2 n = mkN2 n genitive ;
@@ -550,7 +550,7 @@ oper
 
   mkN = overload {
     mkN : (luz : Str) -> N = regN ;
-    mkN : Str -> Gender -> N = \s,g -> {s = (regN s).s ; g = g ; lock_N = <>};
+    mkN : Str -> Gender -> N = \s,g -> (regN s) ** {g = g};
     mkN : (baston,bastones : Str) -> Gender -> N = mk2N ;
     mkN : N -> Str -> N = compN ;
     } ;