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

Let me give you an example: Earth rotates on its axis once times in one day.
The answer to this example can be: How many times does Earth rotate on its axis in one day?
Here is why: The given output correctly poses a question based on the scientific fact given.

OK. solve this:
Earth is the only planet in the solar system that has water, which is essential for human life, present in all three of its states.
Answer:
Earth is the only planet in the solar system that has what element, which is essential for human life, present in all three of its states?