Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: Solid form do alkali metals take at room temperature.

A: What form do alkali metals take at room temperature?
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Q: The mesopause is at the top of the mesosphere.

A: What is at the top of the mesosphere?
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Q: Taste sense is used to tell if there is sugar in a glass of tea.

A:
Which sense is used to tell if there is sugar in a glass of tea?
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