math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Corey had 40 blackcurrant. Sandra presented him some more. Now Corey has 57 blackcurrant. 
sentence 2:  Sandra presented Corey 17 blackcurrants.
<equate> (57 - 40, 17)
Corey had 40 blackcurrant. Sandra presented him some more. Now Corey has 57 blackcurrant. 
 Sandra presented Corey 17 blackcurrants.