simple grammar translation

[nebnebben]

Hi

Can you help me?

programm: ?-start(_P,X,[]).

%%%%%%%%%%%%%%%%%%%%%%%%%%%

sentence(P) --> entity_1(P), entity_2(P).

entity_1(P) --> case_1(P).

case_1(a) --> [noun_a].
case_1(b) --> [noun_b].

entity_2(P) --> case_2(P).

case_2(a) --> [verb_c].
case_2(b) --> [verb_d].

%%%%%%%%%%%%%%%%%%%%%%%%%%%

Can you make Prolog output this grammar
without '-->' but instead with ':-' .

like:

This line :

sentence(P) --> entity_1(P), entity_2(P).
...

is output:

sentence(A,C) :- entity_1(A,B), entity_2(B,C).
...