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: Lobectomy means `` surgical excision of a lobe '' . 
 Question: what   means something?

Ex Output:
Lobectomy


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   began  to do something?

Ex Output:
Keats


Ex Input:
Sentence: While always referring to oneself or the audience by name would be considered strange in English , in Vietnamese it is considered friendly , and is the preferred way to converse among close friends . 
 Question: what is  considered something?

Ex Output:

always referring to oneself or the audience by name