micro watson prolog(answering question).

[clipsymaze]

hi everyone.

i'm having a problem with program, the main aim of it is to display question and check against the answer the user gave, to see if its correct.

the problem i'm having is trying to check to see if the answer given is correct.

micro_watson:-
write('Micro Watson, Olympic Edition'),nl,nl,
write('Categories:'),nl,
write('1. London 2012'),nl,
write('2. Modern Olympic Games'),nl,
write('3. Ancient Olympic Games'),nl,
write('Enter your Category: '), read(X),nl,nl,
write('micro_watson: '), mode(X),
write(' '),
read(Answer),
write(Answer),
sentence(Answer).

mode(1):-
write('London 2012').
mode(2):-
write('Modern Olympic Games').
mode(3):-
write('Ancient Olympic Games').


question('Who won two track gold medal in the 2004 Summer Olympics in Athens', [adjective(two_time),noun(winner),vern(was),noun(kelly_homes)]).
question('Who won Decathlon Goal Medals in the 1980 and 1984 Summer Olympics', [adjective(two_time),noun(winner),vern(was),noun(daley_thompson)]).
question('Who won the Mens 100M at the 1980 Summer Olympics', [adjective(single_time),noun(winner),vern(was),noun(alan_wells)]).
question('In all olympic history who won the most goals medals', [verb(all_time), verb(record),noun(goldmelist),verb(was),noun(marc_spitz)]).
question('In the history of the winter olympics who was perhaps the worst sky jumper', [noun(eddie_the_eagle),adverb(really),verb(was),ady(very),noun(nondistinct)]).
question('Where are the 2012 Olympics to take place', [noun(olympics),verb( are), noun(london)]).
question('Who are the British favourites to medal in 2012',[adjective(british), noun(favourites), verb(include), noun(jess_ennis)]).

det(the).
det(a).

noun(kelly_homes).
noun(daley_thompson).
noun(alan_well).
noun(marc_spitz).
noun(eddie_the_eagle).
noun(greece).
noun(javelin).
noun(games). /*noun?*/
noun(london).
noun(olympics).
noun(jess_ennis).
noun(winner).
noun(record).
noun(favorites).
noun(nondistinct).

adj(two_time).
adj(single_time).
adj(gold_medalist).
adj(record).
adj(very).
adj(ancient).
adj(british).

adverb(really).

verb(was).
verb(all_time).
verb(record).
verb(are).
verb(include).

/*a sentence is made up of a nown phrase and a verb phrase */

sentence(Sentence,sentence(np(Noun_Phrase),vp(Verb_Phrase))):-
/* so take a sentence (first arg) and parse it into a noun phrase and a verb phase */
np(Sentence,Noun_Phrase,Rem),
vp(Rem,Verb_Phrase).

/
np([X|T],np(det(X),NP2),Rem):-
det(X),
np2(T,NP2,Rem).
np(Sentence,Parse,Rem):- np2(Sentence,Parse,Rem).
np(Sentence,np(NP,PP),Rem):-
np(Sentence,NP,Rem1),
pp(Rem1,PP,Rem).
np2([H|T],np2(noun(H)),T):- noun(H).
np2([H|T],np2(adj(H),Rest),Rem):- adj(H),np2(T,Rest,Rem). /* s
pp([H|T],pp(prep(H),Parse),Rem):-
prep(H),
np(T,Parse,Rem).

any help would be appreciated.
thanks