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.

Input: Consider Input: Sentence: A nonsurgical alternative involves the use of a miotic to constrict the pupil and prevent the lens from luxating into the anterior chamber .
Question: what prevents something?

Output: A nonsurgical alternative

Input: Consider Input: Sentence: Born in Washington , D.C. to a British father and an American mother , Florence King grew up in the District with her parents , a sister , her maternal grandmother and her grandmother 's maid .
Question: who was born in somewhere?

Output: Florence King

Input: Consider Input: Sentence: The city saw construction of skyscrapers in the skyline .
Question: what saw something?
Output: The city