math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Kent had 156 lemon. Robert took 91 from him. Now 
sentence 2:  Kent has 65 lemons.
<equate> (156 - 91, 65)
Kent had 156 lemon. Robert took 91 from him. Now 
 Kent has 65 lemons.