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: Jim wears a thick Kevlar vest. Jack is just wearing a cotton shirt. Question: Which top would stop a bullet? (A) Kevlar (B) Cotton

Ex Output:
Kevlar


Ex Input:
Sentence: Diana and Dave are aboard the same train after getting on at the same station. Question: If Diana gets out of the train one stop before Dave, who traveled a shorter distance? (A) Diana (B) Dave.

Ex Output:
Diana


Ex Input:
Sentence: Jack and Tom were golfing and they each had their own golf cart. They decided to race to the next hole. Jack's cart was carrying an extra 400 pounds more than Tom's cart. Question: Who got ahead first? (A) Jack (B) Tom

Ex Output:
Tom