math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: William had 160 Book. John took 125 from him. Now 
sentence 2:  William has 35 books.
<equate> (160 - 125, 35)
William had 160 Book. John took 125 from him. Now 
 William has 35 books.