math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Eugene had some blackcurrant. Dorothy gave him 8 more. Now Eugene has 26 blackcurrant. 
sentence 2:  Eugene had 18 blackcurrant primitively.
<equate> (26 - 8, 18)
Eugene had some blackcurrant. Dorothy gave him 8 more. Now Eugene has 26 blackcurrant. 
 Eugene had 18 blackcurrant primitively.