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 Q]: Sentence: When BrdU is integrated into DNA , it is supposed that the bromine deforms the minor groove so that Hoechst dyes can not reach their optimal binding site . 
 Question: why does something deform something?
[EX A]: so that Hoechst dyes can not reach their optimal binding site

[EX Q]: Sentence: The arena hosts shows in music and comedy , sporting events including world championship boxing , tennis , basketball and rodeo events , and corporate meetings , celebrity charity fundraisers and exhibitions . 
 Question: what does something host?
[EX A]: shows in music and comedy , sporting events including world championship boxing , tennis , basketball and rodeo events , and corporate meetings , celebrity charity fundraisers and exhibitions

[EX Q]: Sentence: Until 1974 , some southern councils of the Boy Scouts of America were still racially segregated . 
 Question: when was someone segregated?
[EX A]:
Until 1974