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: 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?

Ex Output:
by varying the optical path to the sensor


Ex Input:
Sentence: Two years later , in August 1961 , he broke again the European record in Lodz . 
 Question: when did someone break something?

Ex Output:
Two years later , in August 1961 ### Two years later ### in August 1961


Ex Input:
Sentence: They have had over 60 chart hits in the UK , starting with 1967 's `` Pictures Of Matchstick Men '' , and the most recent being in 2010 , which is more than any other rock group . 
 Question: what has something had?

Ex Output:

over 60 chart hits in the UK ### over 60 chart hits in the UK , starting with 1967 's `` Pictures Of Matchstick Men '' , and the most recent being in 2010