math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Steven had some blackberry. John gave him 6 more. Now Steven has 16 blackberry. 
sentence 2:  Steven had 10 blackberry initially.
<equate> (16 - 6, 10)
Steven had some blackberry. John gave him 6 more. Now Steven has 16 blackberry. 
 Steven had 10 blackberry initially.