math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Joan found 6 seashells and Jessica found 8 seashells on the beach. 
sentence 2:  Joan and Jessica found 17 seashells together.
<equate> (6+8, 17)
Joan found 6 seashells and Jessica found 8 seashells on the beach. 
 Joan and Jessica found 17 seashells together.