math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Sandy had 36 pennies and 31 nickels in her bank . Her dad borrowed 20 nickels from Sandy . 
sentence 2:  Sandy has 6 nickels now.
<equate> (31 - 20, 6)
Sandy had 36 pennies and 31 nickels in her bank . Her dad borrowed 20 nickels from Sandy . 
 Sandy has 6 nickels now.