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: Janet is testing how much mass objects have. She is currently testing between a metal rod and a paper crane. She drops both from six feet in the air at the same time. Question: Which has stronger gravity? (A) metal rod (B) paper crane

Ex Output:
metal rod


Ex Input:
Sentence: A dog liked to roam the neighborhood. On Tuesday the dog walked down the street for a good amount of time, and on Wednesday the dog walked down the street but stopped after walking a lesser amount of time. Question: On which walk did the dog walk a greater distance down the street? (A) on Tuesday (B) on Wednesday.

Ex Output:
on Tuesday


Ex Input:
Sentence: A rock and a snowball are rolled down a hill at the same speed. The rock gets stuck after 10 seconds of rolling. The snowball rolls for 30 seconds. Question: Which object rolled farther? (A) Rock (B) Snowball

Ex Output:

Snowball