math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: A worksheet had 4 problems on it. If a teacher had 9 worksheets to grade and had already graded 5 of them, 
sentence 2:  The teacher has 13 more problems to grade.
<equate> ((4.0*(9.0-5.0)), 13)
A worksheet had 4 problems on it. If a teacher had 9 worksheets to grade and had already graded 5 of them, 
 The teacher has 13 more problems to grade.