(Som) Add the structure and placeholders for Somali RG

src/somali/QuestionSom.gf

@@ -0,0 +1,74 @@
+concrete QuestionSom of Question = CatSom ** open
+  ResSom, (VS=VerbSom), (NS=NounSom), (AS=AdverbSom) in {
+
+-- A question can be formed from a clause ('yes-no question') or
+-- with an interrogative.
+
+  lin
+  -- : Cl -> QCl ;
+  -- QuestCl cl = ;
+
+  -- : IP -> VP -> QCl ;
+  -- QuestVP ip vp = ;
+
+  -- : IP -> ClSlash -> QCl ; -- whom does John love
+  --QuestSlash ip cls = ;
+
+  -- : IAdv -> Cl -> QCl ;    -- why does John walk
+  -- QuestIAdv iadv cl = { } ;
+
+  -- : IComp -> NP -> QCl ;   -- where is John?
+  -- QuestIComp icomp np = ;
+
+-- Interrogative pronouns can be formed with interrogative
+-- determiners, with or without a noun.
+
+  -- : IDet -> CN -> IP ;       -- which five songs
+  IdetCN = NS.DetCN ;
+
+  -- : IDet       -> IP ;       -- which five
+  IdetIP = NS.DetNP ;
+
+-- They can be modified with adverbs.
+  -- : IP -> Adv -> IP ;        -- who in Paris
+  --AdvIP = NS.AdvNP ;
+
+-- Interrogative quantifiers have number forms and can take number modifiers.
+
+  -- : IQuant -> Num -> IDet ;  -- which (five)
+  --IdetQuant = NS.DetQuant ;
+
+-- Interrogative adverbs can be formed prepositionally.
+  -- : Prep -> IP -> IAdv ;     -- with whom
+  PrepIP = AS.PrepNP ;
+
+-- They can be modified with other adverbs.
+
+  -- : IAdv -> Adv -> IAdv ;    -- where in Paris
+  AdvIAdv = AS.AdAdv ;
+
+-- Interrogative complements to copulas can be both adverbs and
+-- pronouns.
+
+  -- : IAdv -> IComp ;
+  CompIAdv iadv = iadv ;          -- where (is it)
+
+  -- : IP -> IComp ;
+  CompIP ip = { s = ip.s ! Abs } ;  -- who (is it)
+
+{-
+-- More $IP$, $IDet$, and $IAdv$ are defined in $Structural$.
+
+-- Wh questions with two or more question words require a new, special category.
+
+  cat
+    QVP ;          -- buy what where
+  fun
+    ComplSlashIP  : VPSlash -> IP -> QVP ;   -- buys what
+    AdvQVP        : VP  ->   IAdv -> QVP ;   -- lives where
+    AddAdvQVP     : QVP ->   IAdv -> QVP ;   -- buys what where
+
+    QuestQVP      : IP -> QVP -> QCl ;       -- who buys what where
+-}
+
+}