Write a correct answer to the given question based on its associated fact. Make sure that your answer is contained in the associated fact. Don't be creative and introduce any new word that is not mentioned in the associated fact! Remember that the associated fact has been rearranged to form the question. So, the correct answer words must lie within the associated fact. The correct answer can be a word, phrase, or even a sentence.

Q: Fact: a light bulb is used for seeing at night. 
Question: a light bulb is used for seeing?

A: at night.
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Q: Fact: pines have a positive impact on an ecosystem. 
Question: what has a positive impact on an ecosystem?

A: pines.
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Q: Fact: Ships are used to move people across oceans. 
Question: Ships are used to do what on oceans?

A:
move people across.
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