math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Kim had 156 Bread. Antonia took 20 from him. Now 
sentence 2:  Kim has 131 bread.
<equate> (156 - 20, 131)
Kim had 156 Bread. Antonia took 20 from him. Now 
 Kim has 131 bread.