In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

[Q]: Sentence: Liquid nitrogen is used for cooling detectors of infrared telescopes. Question: What is used for cooling detectors of infrared telescopes?
[A]: liquid nitrogen


[Q]: Sentence: Besides the concentration of dissolve oxygen and nutrients in the water, the availability of sunlight limits aquatic organisms. Question: Besides the concentration of dissolve oxygen and nutrients in the water, what other factor limits aquatic organisms?
[A]: availability of sunlight


[Q]: Sentence: Mercury is closest to our sun. Question: What planet is closest to our sun?
[A]:
mercury