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

Input: Consider Input: A crater can usually be found on the top of composite volcanoes.

Output: A crater can usually be found on the top of what kind of volcanoes?


Input: Consider Input: Under a crushed sugar cube is added and the water is stirred conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature.

Output: Under which conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature?


Input: Consider Input: To determine the atomic weight of an element, you should add up protons and neutrons.
Output: How do you determine the atomic weight of an element?