% Lab 4 - Difference Lists

sentence(L1, L4) :- subject(L1, L2), 
                    verb(L2, L3), 
                    obj(L3, L4).

subject(T1, T3) :- det(T1, T2),
                   noun(T2, T3).

%Add in definition of obj (object) here




%determiners
det([the | X], X).

%nouns
noun([student | X], X).

%verbs
verb([carries | X], X).