math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Marilyn had 51 mango. William took 15 from him. Now 
sentence 2:  Marilyn has 34 mangoes.
<equate> (51 - 15, 34)
Marilyn had 51 mango. William took 15 from him. Now 
 Marilyn has 34 mangoes.