math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Bridget had 253 blackcurrant. Ian clasped some blackcurrant. Now Bridget has 8  blackcurrant. 
sentence 2:  Ian clasped 245 blackcurrants.
<equate> (253 - 8, 245)
Bridget had 253 blackcurrant. Ian clasped some blackcurrant. Now Bridget has 8  blackcurrant. 
 Ian clasped 245 blackcurrants.