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

Q: The values of strangeness assigned to various particles are based on decay systematics.

A: The values of strangeness assigned to various particles are based on what?
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Q: Metallic bonds gives a coil of copper wire the ability to conduct electricity well.

A: What gives a coil of copper wire the ability to conduct electricity well?
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Q: Minerals form when they precipitate from hot fluids that have done cooled down.

A:
Minerals form when they precipitate from hot fluids that have done what?
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