math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Helen had 121 Pen. Jeanne took 38 from him. Now 
sentence 2:  Helen has 83 pens.
<equate> (121 - 38, 83)
Helen had 121 Pen. Jeanne took 38 from him. Now 
 Helen has 83 pens.