## TPTP Problem File: NLP094+1.p

View Solutions - Solve Problem

```%--------------------------------------------------------------------------
% File     : NLP094+1 : TPTP v8.1.0. Released v2.4.0.
% Domain   : Natural Language Processing
% Problem  : Every customer in a restaurant, problem 1
% Version  : [Bos00b] axioms.
% English  : Eliminating logically equivalent interpretations in the statement
%            "Every customer in a restaurant saw a person who drank a
%            coffee."

% Refs     : [Bos00a] Bos (2000), DORIS: Discourse Oriented Representation a
%            [Bos00b] Bos (2000), Applied Theorem Proving - Natural Language
% Source   : [Bos00b]
% Names    : doris071 [Bos00b]

% Status   : Theorem
% Rating   : 0.13 v8.1.0, 0.07 v7.5.0, 0.10 v7.4.0, 0.00 v6.1.0, 0.12 v6.0.0, 0.25 v5.4.0, 0.22 v5.3.0, 0.26 v5.2.0, 0.14 v5.0.0, 0.10 v4.1.0, 0.11 v4.0.0, 0.15 v3.7.0, 0.33 v3.5.0, 0.12 v3.4.0, 0.25 v3.3.0, 0.22 v3.2.0, 0.56 v3.1.0, 0.67 v2.7.0, 0.33 v2.6.0, 0.00 v2.4.0
% Syntax   : Number of formulae    :    1 (   0 unt;   0 def)
%            Number of atoms       :   72 (   0 equ)
%            Maximal formula atoms :   72 (  72 avg)
%            Number of connectives :   73 (   2   ~;   0   |;  65   &)
%                                         (   0 <=>;   6  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   27 (  27 avg)
%            Maximal term depth    :    1 (   1 avg)
%            Number of predicates  :   13 (  13 usr;   0 prp; 1-3 aty)
%            Number of functors    :    0 (   0 usr;   0 con; --- aty)
%            Number of variables   :   28 (   8   !;  20   ?)
% SPC      : FOF_THM_RFO_NEQ

%--------------------------------------------------------------------------
fof(co1,conjecture,
~ ~ ( ( ? [U] :
( actual_world(U)
& ! [V,W] :
( ( customer(U,V)
& restaurant(U,W)
& in(U,V,W) )
=> ? [X,Y,Z,X1] :
( human_person(U,X)
& coffee(U,Y)
& event(U,Z)
& agent(U,Z,X)
& patient(U,Z,Y)
& past(U,Z)
& nonreflexive(U,Z)
& drink(U,Z)
& event(U,X1)
& agent(U,X1,V)
& patient(U,X1,X)
& past(U,X1)
& nonreflexive(U,X1)
& see(U,X1) ) ) )
=> ? [X2] :
( actual_world(X2)
& ! [X3,X4] :
( ( customer(X2,X3)
& restaurant(X2,X4)
& in(X2,X3,X4) )
=> ? [X5,X6,X7,X8] :
( coffee(X2,X5)
& human_person(X2,X6)
& event(X2,X7)
& agent(X2,X7,X6)
& patient(X2,X7,X5)
& past(X2,X7)
& nonreflexive(X2,X7)
& drink(X2,X7)
& event(X2,X8)
& agent(X2,X8,X3)
& patient(X2,X8,X6)
& past(X2,X8)
& nonreflexive(X2,X8)
& see(X2,X8) ) ) ) )
& ( ? [X2] :
( actual_world(X2)
& ! [X3,X4] :
( ( customer(X2,X3)
& restaurant(X2,X4)
& in(X2,X3,X4) )
=> ? [X5,X6,X7,X8] :
( coffee(X2,X5)
& human_person(X2,X6)
& event(X2,X7)
& agent(X2,X7,X6)
& patient(X2,X7,X5)
& past(X2,X7)
& nonreflexive(X2,X7)
& drink(X2,X7)
& event(X2,X8)
& agent(X2,X8,X3)
& patient(X2,X8,X6)
& past(X2,X8)
& nonreflexive(X2,X8)
& see(X2,X8) ) ) )
=> ? [U] :
( actual_world(U)
& ! [V,W] :
( ( customer(U,V)
& restaurant(U,W)
& in(U,V,W) )
=> ? [X,Y,Z,X1] :
( human_person(U,X)
& coffee(U,Y)
& event(U,Z)
& agent(U,Z,X)
& patient(U,Z,Y)
& past(U,Z)
& nonreflexive(U,Z)
& drink(U,Z)
& event(U,X1)
& agent(U,X1,V)
& patient(U,X1,X)
& past(U,X1)
& nonreflexive(U,X1)
& see(U,X1) ) ) ) ) ) ).

%--------------------------------------------------------------------------
```