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: The `` power cepstrum '' was defined in a 1963 paper by Bogert et al. . 
 Question: what was  defined?

Ex Output:
power cepstrum


Ex Input:
Sentence: This technology is implemented in the lens itself , or by moving the sensor as the final element in the optical path . 
 Question: how is something implemented?

Ex Output:
by moving the sensor as the final element in the optical path


Ex Input:
Sentence: Set in an alternate near-future Japan , the protagonist of the story , a young woman codenamed `` Kabuki '' , acts as an agent and television law-enforcement personality for a clandestine government body known as `` The Noh '' . 
 Question: why is someone codenamed something?

Ex Output:

acts as an agent and television law-enforcement personality for a clandestine government body known as `` The Noh '' .