In this task, you are given a sentence and question which can be answered using the sentence. Your task is to answer the question using the information from the sentence. The answer to the question is unique and it is a continuous text span from the sentence.

Ex Input:
Sentence: Getting there requires a fairly steep hike from the Rim Drive trailhead . 
 Question: what is  required?

Ex Output:
a fairly steep hike from the Rim Drive trailhead ### a fairly steep hike


Ex Input:
Sentence: He is known for his work playing the Native American flute , and has been a successful Indian dancer , and has sung in a popular blues band . 
 Question: what has someone sung  in?

Ex Output:
a popular blues band .


Ex Input:
Sentence: Having finished his apprenticeship with Hammond , Keats registered as a medical student at Guy 's Hospital and began studying there in October 1815 . 
 Question: who did someone finish something with?

Ex Output:

Hammond