Leo: Given the sentence "A couple examining produce at a farmers' market." is it true that "A couple is trying to decide if they should buy bananas at the farmers' market."?
Mei: OK, So, let's think first...
Me:
A couple examining produce at a farmers' market does not imply that they are trying to decide if they should buy bananas at the farmers' market.
Thus, the answer is it is not possible to tell.