math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: John had some papaya. Antoinette took 69 from him. Now John has 87 papaya. 
sentence 2:  John had 156 papaya at first.
<equate> (87 + 69, 156)
John had some papaya. Antoinette took 69 from him. Now John has 87 papaya. 
 John had 156 papaya at first.