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.

[EX Q]: Sentence: Cloud of these can make a shadow on the ground during the day. Question: Which of these can make a shadow on the ground during the day?
[EX A]: Cloud

[EX Q]: Sentence: The brain is the most complex organ in the human body. Question: What is the most complex organ in the human body?
[EX A]: brain

[EX Q]: Sentence: Control rods play an important role in the modulation of the nuclear chain reaction. Question: What play an important role in the modulation of the nuclear chain reaction?
[EX A]:
control rods