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: As ex-slaves risked beatings for failing to meet the continuing duties , their freedom was limited . 
 Question: what was  continuing?
Example Output: duties

Example Input: Sentence: But there are two separate words which function as pronouns : `` aya '' `` I , me '' and `` nihi '' `` you '' . 
 Question: what do something function  as?
Example Output: pronouns : `` aya '' `` I , me '' and `` nihi '' `` you ''

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