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

Input: Consider Input: Vesicles are basic tools of the cell for organizing metabolism, transport, and storage of molecules.

Output: What are basic tools of the cell for organizing metabolism, transport, and storage of molecules?


Input: Consider Input: The frequency of a wave is the reciprocal of the period of the wave.

Output: The frequency of a wave is the reciprocal of what other attribute of the wave?


Input: Consider Input: Neon, krypton and argon are examples of halogen gases kind of gases, which produce light by electroluminescence.


Output: Neon, krypton and argon are examples of what kind of gases, which produce light by electroluminescence?