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poetry-02.lp
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#show output/1.
% word(she).
% pos(she, pronoun_subj).
%
% word(her).
% pos(her, pronoun_obj).
% pos(her, det).
%
% word(he).
% word(him).
% word(his).
%
% pos(he, pronoun_subj).
% pos(him, pronoun_obj).
% pos(his, det).
word(they).
% word(them).
word(their).
pos(they, pronoun_subj).
% pos(them, pronoun_obj).
pos(their, det).
% Nouns
word(transformation).
pos(transformation, noun).
word(self).
pos(self, noun).
plural(self, selves).
word(limb).
pos(limb, noun).
plural(limb, limbs).
word(eye).
pos(eye,noun).
plural(eye, eyes).
word(grace).
pos(grace, subj).
pos(grace, obj).
% Verbs
word(transform).
pos(transform, vt).
word(see).
pos(see, vt).
word(touch).
pos(touch, vt).
word(glow).
pos(glow, vi).
word(flail).
pos(flail, vi).
word(unfurl).
pos(unfurl, vi).
word(fall).
pos(fall, vi).
% Determiners and prepositions
word(the).
pos(the, det).
word(a).
pos(a, det).
word(into).
pos(into, prep).
word(for).
pos(for, prep).
word(from).
pos(from, prep).
% Grammar expansion rules
expands(subj, seq(det, noun)).
expands(subj, pronoun_subj).
expands(vp, vi).
expands(vp, seq(vt, obj)).
expands(vp, seq(vi, avp)).
expands(vp, seq(seq(vt, obj), avp)).
expands(avp, seq(prep, obj)).
expands(obj, seq(det, noun)).
expands(obj, pronoun_obj).
expands(sentence, seq(subj, vp)).
expands(Pos, Word) :- pos(Word, Pos).
expands(noun, Plural) :- pos(Word, noun), plural(Word, Plural).
expands(seq(X,Y), seq(X1, Y))
:- reachable(seq(X,Y)),
expands(X, X1).
expands(seq(X,Y), seq(X,Y1))
:- reachable(seq(X,Y)),
expands(Y, Y1).
reachable(X) :- origin(X).
reachable(Y)
:- reachable(X), expands(X, Y).
reachable(X)
:- reachable(seq(X,Y)).
reachable(Y)
:- reachable(seq(X,Y)).
matches(X, X)
:- origin(X).
matches(X, Z)
:- matches(X, Y), expands(Y,Z).
ground(W) :- word(W).
ground(seq(X,Y)) :- ground(X), ground(Y), reachable(seq(X,Y)).
ground(X) :- ground(seq(X,Y)).
ground(Y) :- ground(seq(X,Y)).
origin(sentence).
valid(Category, Instance) :- matches(Category, Instance), ground(Instance).
8 {output(S) : valid(sentence, S) } 8.
output_component(O) :- output(O).
output_component(X) :- output_component(seq(X,Y)).
output_component(Y) :- output_component(seq(X,Y)).
appears(W) :- word(W), output_component(W).
2 { appears(W) : pos(W, prep) } 8.
:- output_component(seq(seq(touch, _), seq(into, _))).
:- output_component(seq(a, X)), plural(_,X).
first_of(W, W) :- word(W), appears(W).
first_of(seq(W,Y), W) :- output_component(seq(W,Y)), word(W).
first_of(seq(X,Y), W) :- first_of(X, W), output_component(seq(X,Y)).
first_word(W) :- output(O), first_of(O, W).
#show first_word/1.
% trying to force more than one first word
more_than_one_first_word :- first_word(W1), first_word(W2), not W1=W2.
:- not more_than_one_first_word.
% last_of(W, W) :- word(W), appears(W).
% last_of(seq(X,W), W) :- output_component(seq(X,W)), word(W).
% last_of(seq(X,Y), W) :- last_of(Y, W).
%
% adjacent(W1,W2) :-
% output_component(seq(X,Y)),
% last_of(X, W1),
% appears_times_in(W, 1, W) :- appears(W).
% appears_times_in(W, 0, W2) :- appears(W2), appears(W), W!=W2.
% appears_times_in(W, N1+N2, seq(X,Y)) :-
% output_component(seq(X,Y)),
% appears_times_in(W, N1, X),
% appears_times_in(W, N2, Y).
%
% :- appears_times_in(transformation, N, S), N > 1.