math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Robert had some Biscuit. James took 11 from him. Now Robert has 50 Biscuit. 
sentence 2:  Robert had 61 biscuits at first.
<equate> (50 + 11, 61)
Robert had some Biscuit. James took 11 from him. Now Robert has 50 Biscuit. 
 Robert had 61 biscuits at first.