TASK DEFINITION: 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.
PROBLEM: 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: what does something stabilize?

SOLUTION: the recorded image

PROBLEM: Sentence: Originally the three women , Amy Saunders , Lou Bennett and Sally Dastey combined their vocal talents as backing singers for Aboriginal band Djaambi , led by Saunder 's brother Richard Frankland in 1990 . 
 Question: what was someone combining something as?

SOLUTION: backing singers for Aboriginal band Djaambi , led by Saunder 's brother Richard Frankland in 1990 .

PROBLEM: Sentence: The city saw construction of skyscrapers in the skyline . 
 Question: what was  seen?

SOLUTION:
construction of skyscrapers in the skyline .

