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load :: false ==> true rows(display,L) :- setofall(R,row(display,R),L) row(display,display(PS,GS,DS,CS,OS,TS,ES)) :- type(P,person) & link(inspect,person,P,PS) & gender(P,GS) & dob(P,DS) & nationality(P,CS) & occupation(P,OS) & mobile(P,TS) & email(P,ES) gender(X,Y) :- person.gender(X,Y) gender(X,"") :- countofall(Y,person.gender(X,Y),0) dob(X,Y) :- person.dob(X,Y) dob(X,"") :- countofall(Y,person.dob(X,Y),0) nationality(X,Y) :- person.nationality(X,Y) nationality(X,"") :- countofall(Y,person.nationality(X,Y),0) occupation(X,Y) :- person.occupation(X,Y) occupation(X,"") :- countofall(Y,person.occupation(X,Y),0) mobile(X,Y) :- person.mobile(X,Y) mobile(X,"") :- countofall(Y,person.mobile(X,Y),0) email(X,Y) :- person.email(X,Y) email(X,"") :- countofall(Y,person.email(X,Y),0) link(Sheet,Class,Object,Link) :- stringify(Sheet,SS) & stringify(Class,CS) & stringify(Object,OS) & stringappend("<a href='",SS,"_",CS,".html?id=",OS,"' style='color:#0044bb;text-decoration:none;cursor:pointer'>",OS,"</a>",Link)