math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Mabel had 174 Beg. Henry took 147 from him. Now 
sentence 2:  Mabel has 27 Beg.
<equate> (174 - 147, 27)
Mabel had 174 Beg. Henry took 147 from him. Now 
 Mabel has 27 Beg.