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: An `` optical image stabilizer '' , often abbreviated OIS , IS , or OS , is a mechanism used in a still camera or video camera that stabilizes the recorded image by varying the optical path to the sensor . 
 Question: how does something stabilize something?
Example Output: by varying the optical path to the sensor

Example Input: Sentence: Initially formed as a punk band `` The Toilets '' under lead singer Mike Peters the band soon embraced rock , displaying marked influences from Welsh language and culture . 
 Question: where did someone display something from?
Example Output: Welsh language and culture .

Example Input: Sentence: Losing Barbara caused Dick to become estranged from Bruce for his role . 
 Question: who was  lost?
Example Output:
Barbara