math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Robert had 54 toy. Sue took 42 from him. Now 
sentence 2:  Robert has 8 toys.
<equate> (54 - 42, 8)
Robert had 54 toy. Sue took 42 from him. Now 
 Robert has 8 toys.