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

Input: Consider Input: Wave amplitude and wavelength are two important measures of wave size.

Output: Wave amplitude and wavelength are two important measures of what?


Input: Consider Input: Saturated hydrocarbons hydrocarbons contain only single bonds between carbon atoms.

Output: What hydrocarbons contain only single bonds between carbon atoms?


Input: Consider Input: Spores are generally produced through sexual reproduction.
Output: Spores are generally produced through what type of reproduction?