+ hZN^RIHtHtHtHtHtHtHtHtH t H t H t H t RRlt RtR#)) AllExpression AndExpressionApplicationExpressionEqualityExpressionExistsExpression IffExpression ImpExpressionNegatedExpression OrExpressionVariableExpressionskolem_functionunique_variableNc  Vf \4pVf \4p\V\4'di\VPWP 0,W P 0,4pVP VP \\VR744#\V\4'd2\VPW4\VPW4,#\V\4'd5\\VPW4\VPW44#\V\4'd6\\VP)W4\VPW44#\V\4'dp\\VP)W4\VPW44\\VPW4\VP)W44,#\V\ 4'dV#\V\"4'EdVPp\V\4'd\VP)WVP 0,4pV'd&VP VP \%V44#\\VR74pVP VP V4#\V\4'd7\\VP)W4\VP)W44#\V\4'd4\VP)W4\VP)W4,#\V\4'd3\VPW4\VP)W4,#\V\4'dp\\VP)W4\VP)W44\\VPW4\VPW44,#\V\ 4'dV#\V\"4'd\VPW4#\V\&4'dj\VP)WP 0,W$P 0,4pVP VP \\VR744#\V\(4'dV#\+RV,4h\V\&4'd\VPWVP 0,4pV'd&VP VP \%V44#\\VR74pVP VP V4#\V\(4'dV#\+RV,4h)zG Skolemize the expression and convert to conjunctive normal form (CNF) )ignorez'%s' cannot be skolemized)set isinstancer skolemizetermvariablereplacer rrfirstsecondr to_cnfr rrr r rr Exception) expression univ_scopeused_variablesrnegatedskolem_constants&&& 4/usr/lib/python3/dist-packages/nltk/sem/skolemize.pyrrsU *m,, OO --. . 112 2  ||    nE F   J . .)):F   zJ    J - - j&& C j'' D   J . . z''' D j'' D   J . . z''' D j'' D   j&& C z(((* E    J 2 3 3 J 1 2 2// g} - - zW=M=M:#||G$4$4oFF  / /7==.*E7>>/:F  . .gmm^ZH9L  / /W]]JG)K  / /7==.*E7>>/:F'--D'..*E !3 4 4  !2 3 3W\\:F F !1 2 2 ..//"2"2!33D <<  "?.#IJ !6 7 7 7*DE E J 0 1 1 OOZ:;N;N:O)O  << 3 3_Z5PQ Q01WXO<< 3 3_E E J 5 6 63j@AAc6\V\4'd5\VPV4p\VPV4pW#,#\V\4'd3\WP4p\WP4pW#,#W,#)zA Convert this split disjunction to conjunctive normal form (CNF) )rrrrr)rrr_firstr_seconds&& r rrst%''f-%,,/!! FM * * -%/!!~r!)NN)nltk.sem.logicrrrrrrr r r r r rrrr!r r's&     kB\ r!