Turn the given fact into a question by a simple rearrangement of words. This typically involves replacing some part of the given fact with a WH word. For example, replacing the subject of the provided fact with the word "what" can form a valid question. Don't be creative! You just need to rearrange the words to turn the fact into a question - easy! Don't just randomly remove a word from the given fact to form a question. Remember that your question must evaluate scientific understanding. Pick a word or a phrase in the given fact to be the correct answer, then make the rest of the question. You can also form a question without any WH words. For example, "A radio converts electricity into?"

Example Input: Fact: navigation requires knowing east, west, and north.
Example Output: what does navigation require knowing?

Example Input: Fact: Evaporation can be used for separating a solute from a water in an aqueous solution.
Example Output: Evaporation can be used for separating a solute from a water in what?

Example Input: Fact: Sterilization can be used to extend the shelf life of that food.
Example Output:
What can be used to extend the shelf life of that food?