math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Norma had some lemon. Patricia gave him 7 more. Now Norma has 14 lemon. 
sentence 2:  Norma originally had 7 lemons.
<equate> (14 - 7, 7)
Norma had some lemon. Patricia gave him 7 more. Now Norma has 14 lemon. 
 Norma originally had 7 lemons.