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: Poles parts of the planet does solar energy have difficulty reaching.

Output: What parts of the planet does solar energy have difficulty reaching?


Input: Consider Input: In a glass of sweet tea the sugar is known as the solute and the water is known as the solvent.
Output: In a glass of sweet tea the sugar is known as the solute and the water is known as what?