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

Q: Water seeping into the ground is known as infiltration.

A: Water seeping into the ground is known as?
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Q: Molar masses can be used to determine the mass of a quantity of material.

A: What can be used to determine the mass of a quantity of material?
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Q: Looking directly at the sun can cause blindness.

A:
Looking directly at what celestial object can cause blindness?
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