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?"

Ex Input:
Fact: a sifter is used for some recipes.

Ex Output:
a what is used for some recipes?


Ex Input:
Fact: Sperm is deposited in the vagina sometimes causing pregnancy.

Ex Output:
What does the deposition of the sperm into the vagina sometimes lead to?


Ex Input:
Fact: Fertilization occurs when a male gamete and an egg fuse to form a diploid zygote.

Ex Output:

Fertilization occurs when an egg and what join together to form a diploid zygote?