% Author: Claudia-Ann Gray
% Date: 9/7/2010
lover(Who):-loves(Who, mary), loves(Who, lisa).
couples(Who, Whom):-loves(Who, Whom), loves(Whom, Who).
%Jack and John Brown are boys.
boy(jack).
boy('john brown').
%Jack loves Mary and Lisa.
loves(jack, mary).
loves(jack, lisa).
%Jim loves Mary.
loves(jim, mary).
%Joe loves Susan and Susan loves Joe.
loves(joe, susan).
loves(susan, joe).
flu(Who):-symptom(Who, cough), symptom(Who, sneeze), symptom(Who, fever).
symptom(john, cough).
symptom(john, sneeze).
symptom(john, fever).
Tue Oct 19, 2010 7:43 pm
