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: Hydrogen gas is generated by the reaction of nitric acid and elemental iron else. Question: Hydrogen gas is generated by the reaction of nitric acid and what else?
[EX A]: elemental iron

[EX Q]: Sentence: Breathing control is only effective if ventilation is matched to blood flow through alveolar capillaries. Question: What is only effective if ventilation is matched to blood flow through alveolar capillaries?
[EX A]: breathing control

[EX Q]: Sentence: The human penis contains the urethra, as well as three cylinders of spongy erectile tissue. Question: The human penis contains the urethra, as well as how many cylinders of spongy erectile tissue?
[EX A]:
three