math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: John had some toy. Kent gave him 7 more. Now John has 28 toy. 
sentence 2:  John originally had 16 toys.
<equate> (28 - 7, 16)
John had some toy. Kent gave him 7 more. Now John has 28 toy. 
 John originally had 16 toys.