math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Michael had 79 blackberry. Steve took 42 from him. Now 
sentence 2:  Michael has 37 blackberries.
<equate> (79 - 42, 37)
Michael had 79 blackberry. Steve took 42 from him. Now 
 Michael has 37 blackberries.