## TPTP Problem File: SYN000-1.p

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```%------------------------------------------------------------------------------
% File     : SYN000-1 : TPTP v8.0.0. Released v4.0.0.
% Domain   : Syntactic
% Problem  : Basic TPTP CNF syntax
% Version  : Biased.
% English  : Basic TPTP CNF syntax that you can't survive without parsing.

% Refs     :
% Source   : [TPTP]
% Names    :

% Status   : Unsatisfiable
% Rating   : 0.16 v7.5.0, 0.11 v7.4.0, 0.12 v7.3.0, 0.17 v7.0.0, 0.27 v6.2.0, 0.40 v6.1.0, 0.36 v6.0.0, 0.50 v5.4.0, 0.55 v5.3.0, 0.56 v5.2.0, 0.62 v5.1.0, 0.65 v5.0.0, 0.64 v4.1.0, 0.62 v4.0.1, 0.64 v4.0.0
% Syntax   : Number of clauses     :   11 (   5 unt;   6 nHn;   7 RR)
%            Number of literals    :   27 (   3 equ;   8 neg)
%            Maximal clause size   :    5 (   2 avg)
%            Maximal term depth    :    4 (   2 avg)
%            Number of predicates  :   16 (  13 usr;  10 prp; 0-3 aty)
%            Number of functors    :    8 (   8 usr;   5 con; 0-3 aty)
%            Number of variables   :   11 (   5 sgn)
% SPC      : CNF_UNS_RFO_SEQ_NHN

%------------------------------------------------------------------------------
%----Propositional
cnf(propositional,axiom,
( p0
| ~ q0
| r0
| ~ s0 ) ).

%----First-order
cnf(first_order,axiom,
( p(X)
| ~ q(X,a)
| r(X,f(Y),g(X,f(Y),Z))
| ~ s(f(f(f(b)))) ) ).

%----Equality
cnf(equality,axiom,
( f(Y) = g(X,f(Y),Z)
| f(f(f(b))) != a
| X = f(Y) ) ).

%----True and false
cnf(true_false,axiom,
( \$true
| \$false ) ).

%----Quoted symbols
cnf(single_quoted,axiom,
( 'A proposition'
| 'A predicate'(Y)
| p('A constant')
| p('A function'(a))
| p('A \'quoted \\ escape\'') ) ).

%----Connectives - seen them all already

%----Annotated formula names
cnf(123,axiom,
( p(X)
| ~ q(X,a)
| r(X,f(Y),g(X,f(Y),Z))
| ~ s(f(f(f(b)))) ) ).

%----Roles - seen axiom already
cnf(role_hypothesis,hypothesis,
p(h) ).

cnf(role_negated_conjecture,negated_conjecture,
~ p(X) ).

%----Include directive
include('Axioms/SYN000-0.ax').