math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Robert had some Doll. Benjamin took 79 from him. Now Robert has 94 Doll. 
sentence 2:  Robert had 173 Doll in the beginning.
<equate> (94 + 79, 173)
Robert had some Doll. Benjamin took 79 from him. Now Robert has 94 Doll. 
 Robert had 173 Doll in the beginning.