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


Question: Lichens are not a single organism, but rather an example of a mutualism.

Answer: Lichens are not a single organism, but rather an example of a what?


Question: The electrode at which reduction occurs is called the cathode.

Answer:
What is the electrode at which reduction occurs called?