math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Bertram had some Pen. Donna took 68 from him. Now Bertram has 97 Pen. 
sentence 2:  Bertram had 163 pens at first.
<equate> (97 + 68, 163)
Bertram had some Pen. Donna took 68 from him. Now Bertram has 97 Pen. 
 Bertram had 163 pens at first.