math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Robert had 139 strawberry. Evan took 118 from him. Now 
sentence 2:  Robert has 21 strawberries.
<equate> (139 - 118, 21)
Robert had 139 strawberry. Evan took 118 from him. Now 
 Robert has 21 strawberries.