You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct answer (return the string of the correct option, not 'A' or 'B') for the given question.

Ex Input:
Sentence: A halter sliding across a barn floor gets hotter then one sliding across a field. Question: Which surface forces the halter to travel at a lower rate of speed? (A) barn floor (B) field

Ex Output:
barn floor


Ex Input:
Sentence: Caleb stands on the corner in front of a restaurant. Down the road is a car dealership. Question: Which appears larger? (A) car dealership (B) restaurant

Ex Output:
restaurant


Ex Input:
Sentence: James is a submarine operator who knows that the pacific ocean isn't as rough as the atlantic ocean. The atlantic ocean has more friction. Question: Which ocean can he drive his submarine quicker in? (A) pacific ocean (B) atlantic ocean

Ex Output:
pacific ocean