math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Marcus had some Car. John gave him 2 more. Now Marcus has 18 Car. 
sentence 2:  Marcus had 16 cars.
<equate> (18 - 2, 16)
Marcus had some Car. John gave him 2 more. Now Marcus has 18 Car. 
 Marcus had 16 cars.