math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Martha wants to buy a digital camera from her 3 month savings. To do this she needs to maintain an average saving of 300.00 in each month. She saves 450.00 in the first month and 200.00 in the second month. Find the amount she should save in the third month , in dollars , to buy a digital camera at the end of three months.
sentence 2:  Martha should save $249 in the third month to buy a digital camera at the end of three months.
<equate> (300.0, months.)
Martha wants to buy a digital camera from her 3 month savings. To do this she needs to maintain an average saving of 300.00 in each month. She saves 450.00 in the first month and 200.00 in the second month. Find the amount she should save in the third month , in dollars , to buy a digital camera at the end of three months.
 Martha should save $249 in the third month to buy a digital camera at the end of three months.