math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Shirley had 168 mango. Carol took 67 from him. Now 
sentence 2:  Shirley has 101 mangoes.
<equate> (168 - 67, 101)
Shirley had 168 mango. Carol took 67 from him. Now 
 Shirley has 101 mangoes.