math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Sandra had 150 Beg. Chris took 36 from him. Now 
sentence 2:  Sandra has 117 Bugs.
<equate> (150 - 36, 117)
Sandra had 150 Beg. Chris took 36 from him. Now 
 Sandra has 117 Bugs.