math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Barbara had some cherry. Ana gave him 2 more. Now Barbara has 17 cherry. 
sentence 2:  Barbara had 15 cherries initially.
<equate> (17 - 2, 15)
Barbara had some cherry. Ana gave him 2 more. Now Barbara has 17 cherry. 
 Barbara had 15 cherries initially.