math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Phyllis had some coconut. Sandra gave him 6 more. Now Phyllis has 11 coconut. 
sentence 2:  Phyllis had 3 coconuts earlier.
<equate> (11 - 6, 3)
Phyllis had some coconut. Sandra gave him 6 more. Now Phyllis has 11 coconut. 
 Phyllis had 3 coconuts earlier.