math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Kevin had 162 Doll. Astrid took 139 from him. Now 
sentence 2:  Kevin has 20 Dollars.
<equate> (162 - 139, 20)
Kevin had 162 Doll. Astrid took 139 from him. Now 
 Kevin has 20 Dollars.