## TPTP Problem File: SWB067+1.p

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```%------------------------------------------------------------------------------
% File     : SWB067+1 : TPTP v7.5.0. Released v5.2.0.
% Domain   : Semantic Web
% Problem  : Double Inverse Property As Equivalence
% Version  : [Sch11] axioms.
% English  : Transitively related inverse properties are equivalent.

% Refs     : [Sch11] Schneider, M. (2011), Email to G. Sutcliffe
% Source   : [Sch11]
% Names    : rdfbased-sem-inv-trans [Sch11]

% Status   : Theorem
% Rating   : 0.64 v7.5.0, 0.78 v7.4.0, 0.70 v7.3.0, 0.62 v7.1.0, 0.61 v7.0.0, 0.67 v6.4.0, 0.65 v6.3.0, 0.54 v6.2.0, 0.64 v6.1.0, 0.80 v6.0.0, 0.78 v5.5.0, 0.85 v5.4.0, 0.82 v5.3.0, 0.85 v5.2.0
% Syntax   : Number of formulae    :  560 ( 197 unit)
%            Number of atoms       : 1775 (  90 equality)
%            Maximal formula depth :   27 (   5 average)
%            Number of connectives : 1351 ( 136   ~;  35   |; 759   &)
%                                         ( 126 <=>; 295  =>;   0  <=;   0 <~>)
%                                         (   0  ~|;   0  ~&)
%            Number of predicates  :   13 (   1 propositional; 0-3 arity)
%            Number of functors    :  160 ( 159 constant; 0-2 arity)
%            Number of variables   :  973 (   0 sgn; 911   !;  62   ?)
%            Maximal term depth    :    2 (   1 average)
% SPC      : FOF_THM_RFO_SEQ