math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Tammy had some pineapple. Sylvia gave him 1 more. Now Tammy has 13 pineapple. 
sentence 2:  Tammy had 13 pineapple at first.
<equate> (13 - 1, 13)
Tammy had some pineapple. Sylvia gave him 1 more. Now Tammy has 13 pineapple. 
 Tammy had 13 pineapple at first.