math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Sam invited 9 friends to a birthday party, but 6 couldn't come. If he wanted to buy enough cupcakes so each person could have exactly 2, 
sentence 2:  Sam should buy 6 cupcakes.
<equate> ((2.0*(9.0-6.0)), 6)
Sam invited 9 friends to a birthday party, but 6 couldn't come. If he wanted to buy enough cupcakes so each person could have exactly 2, 
 Sam should buy 6 cupcakes.