diff --git a/lectures/lecture-02/IntroEng.gf b/lectures/lecture-02/IntroEng.gf
index 759ff24..c70ca4a 100644
--- a/lectures/lecture-02/IntroEng.gf
+++ b/lectures/lecture-02/IntroEng.gf
@@ -2,20 +2,23 @@ concrete IntroEng of Intro = {
 
 lincat
   S = Str ;
-  NP = Str ;
-  VP = Str ;
+  NP = {s : Case => Str ; a : Agr} ;
+  VP = Agr => Str ;
   CN = Str ;
   AP = Str ;
   Det = Str ;
-  Pron = Str ;
+  Pron = {s : Case => Str ; a : Agr} ;
   N = Str ;
   A = Str ;
-  V2 = Str ;
+  V2 = Agr => Str ;
 
 lin
-  PredVP np vp = np ++ vp ;
-  ComplV2 v2 np = v2 ++ np ;
-  DetCN det cn = det ++ cn ;
+  PredVP np vp = np.s ! Nom ++ vp ! np.a ;
+  ComplV2 v2 np = table {a => v2 ! a ++ np.s ! Acc} ;
+  DetCN det cn = {
+    s = table {_ => det ++ cn} ;
+    a = SgP3
+    } ;
   AdjCN ap cn = ap ++ cn ;
   UseN n = n ;
   UseA a = a ;
@@ -24,7 +27,14 @@ lin
   the_Det = "the" ;
   black_A = "black" ;
   cat_N = "cat" ;
-  see_V2 = "sees" ;
-  we_Pron = "us" ;
+  see_V2 = table {SgP3 => "sees" ; Other => "see"} ;
+  we_Pron = {
+    s = table {Nom => "we" ; Acc => "us"} ;
+    a = Other
+    } ;
+
+param
+  Case = Nom | Acc ;
+  Agr = SgP3 | Other ;
 
 }
\ No newline at end of file