math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Marion had 177 blackberry. Lee gripped some blackberry. Now Marion has 29  blackberry. 
sentence 2:  Lee gripped 153 blackberries.
<equate> (177 - 29, 153)
Marion had 177 blackberry. Lee gripped some blackberry. Now Marion has 29  blackberry. 
 Lee gripped 153 blackberries.