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.

Example Input: Sentence: The album is named after the discredited pseudoscience of phrenology , the study of head shapes to determine intelligence and character , which was used to rationalize racism during the 19th century in the United States . 
 Question: what was something used  to do?
Example Output: rationalize racism during the 19th century in the United States .

Example Input: Sentence: The Packers had not lost at Lambeau Field in December since the 1993 season , and the 5-7 Panthers desperately needed a win to keep their playoff hopes alive . 
 Question: what had n't someone lost  at?
Example Output: Lambeau Field

Example 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: why does someone converse  among someone?
Example Output:
is the preferred way