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

Example Input: Renewable energy sources emit fewer or no greenhouse gases.
Example Output: What type energy sources emit fewer or no greenhouse gases?

Example Input: Glaciers deposit their sediment when they melt.
Example Output: When do glaciers deposit their sediment?

Example Input: Solid form do alkali metals take at room temperature.
Example Output:
What form do alkali metals take at room temperature?