math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Terry had 108 apple. Martha took 27 from him. Now 
sentence 2:  Terry has 81 apples.
<equate> (108 - 27, 81)
Terry had 108 apple. Martha took 27 from him. Now 
 Terry has 81 apples.