math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Joan had 86 pineapple. Annie took 80 from him. Now 
sentence 2:  Joan has 9 pineapple.
<equate> (86 - 80, 9)
Joan had 86 pineapple. Annie took 80 from him. Now 
 Joan has 9 pineapple.