math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Elsie had 142 watermelon. Tasha took 68 from him. Now 
sentence 2:  Elsie has 70 watermelon.
<equate> (142 - 68, 70)
Elsie had 142 watermelon. Tasha took 68 from him. Now 
 Elsie has 70 watermelon.