math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Stephen had some blackcurrant. Melvin took 20 from him. Now Stephen has 58 blackcurrant. 
sentence 2:  Stephen had 78 blackcurrants incipidly.
<equate> (58 + 20, 78)
Stephen had some blackcurrant. Melvin took 20 from him. Now Stephen has 58 blackcurrant. 
 Stephen had 78 blackcurrants incipidly.