math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: James had some pear. John gave him 2 more. Now James has 49 pear. 
sentence 2:  James had 47 pears.
<equate> (49 - 2, 47)
James had some pear. John gave him 2 more. Now James has 49 pear. 
 James had 47 pears.