math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Joan had some apricot. Carl gave him 9 more. Now Joan has 21 apricot. 
sentence 2:  Joan had 16 apricots to begin with.
<equate> (21 - 9, 16)
Joan had some apricot. Carl gave him 9 more. Now Joan has 21 apricot. 
 Joan had 16 apricots to begin with.