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: The economy of the early village was based on fishing and ship building . 
 Question: what was something based  on?
[EX A]: fishing and ship building ### fishing ### ship building

[EX Q]: Sentence: The `` power cepstrum '' was defined in a 1963 paper by Bogert et al. . 
 Question: how was something defined?
[EX A]: in a 1963 paper by Bogert et al.

[EX Q]: Sentence: As Secretary of the Interior , Chandler eradicated serious corruption in the Bureau of Indian Affairs , fully endorsing President Grant 's Peace Policy initiative to civilize American Indian tribes . 
 Question: how did someone eradicate something?
[EX A]:
fully endorsing President Grant 's Peace Policy initiative to civilize American Indian tribes