math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Stephanie had 30 kiwi. Christopher donateed him some more. Now Stephanie has 43 kiwi. 
sentence 2:  Christopher donated 13 kiwi to Stephanie.
<equate> (43 - 30, 13)
Stephanie had 30 kiwi. Christopher donateed him some more. Now Stephanie has 43 kiwi. 
 Christopher donated 13 kiwi to Stephanie.