instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
The high points in a transverse wave are called crests.
answer:
What are the high points in a transverse wave called?


question:
You call the hard case that surrounds the soft parts of some animals the exoskeleton.
answer:
What do you call the hard case that surrounds the soft parts of some animals?


question:
Spring tides are created when the sun and moon's tides match.
answer:
Which type of tides are created when the sun and moon's tides match?