math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Patricia had some watermelon. Robert gave him 4 more. Now Patricia has 50 watermelon. 
sentence 2:  Patricia had 42 watermelons to begin with.
<equate> (50 - 4, 42)
Patricia had some watermelon. Robert gave him 4 more. Now Patricia has 50 watermelon. 
 Patricia had 42 watermelons to begin with.