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: Metallic bonds hold together positive metal ions and their valence electrons. Question: What types of bonds hold together positive metal ions and their valence electrons?

A: metallic bonds
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Q: Sentence: Saturated hydrocarbons hydrocarbons contain only single bonds between carbon atoms. Question: What hydrocarbons contain only single bonds between carbon atoms?

A: saturated hydrocarbons
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Q: Sentence: The structure of mitochondrion plays an important role in aerobic respiration. Question: The structure of mitochondrion plays an important role in what?

A:
aerobic respiration
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