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.
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Question: Sentence: The epidermis of a leaf contains openings known as stomata, through which the exchange of gases takes place. Question: Which part of a leaf contains openings known as stomata, through which the exchange of gases takes place?

Answer: epidermis


Question: Sentence: Food chewed evenly during mastication moisten and lubricate the lining of the mouth and this? Question: Food chewed evenly during mastication moisten and lubricate the lining of the mouth and this?

Answer: pharynx


Question: Sentence: Viruses biological agents that infect living hosts contain dna, yet lack the other parts shared by all cells, including a plasma membrane, cytoplasm, and ribosomes. Question: What biological agents that infect living hosts contain dna, yet lack the other parts shared by all cells, including a plasma membrane, cytoplasm, and ribosomes?

Answer:
viruses