math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Heather had 6 nectarine. Christopher giveed him some more. Now Heather has 58 nectarine. 
sentence 2:  Christopher gave Heather 51 nectarines.
<equate> (58 - 6, 51)
Heather had 6 nectarine. Christopher giveed him some more. Now Heather has 58 nectarine. 
 Christopher gave Heather 51 nectarines.