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 surfboard isn't as flexible as cardboard. Question: Which item will break easier when bent? (A) surfboard (B) cardboard

Ex Output:
surfboard


Ex Input:
Sentence: A valley is significantly rougher than a mountainside. Question: This means that lava rolling down which surface will reach a greater top speed? (A) mountainside (B) valley

Ex Output:
valley


Ex Input:
Sentence: Ron is at the gym lifting weights.  Tony joins him an hour into his workout.  They leave at the same time. Question: Who sweat more? (A) Ron (B) Tony

Ex Output:
Ron