math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Ronald had some Pen. Rickey gave him 9 more. Now Ronald has 36 Pen. 
sentence 2:  Ronald had 27 pens initially.
<equate> (36 - 9, 27)
Ronald had some Pen. Rickey gave him 9 more. Now Ronald has 36 Pen. 
 Ronald had 27 pens initially.