Write a correct answer to the given question based on its associated fact. Make sure that your answer is contained in the associated fact. Don't be creative and introduce any new word that is not mentioned in the associated fact! Remember that the associated fact has been rearranged to form the question. So, the correct answer words must lie within the associated fact. The correct answer can be a word, phrase, or even a sentence.

[Q]: Fact: The crystallized rocks are made by lava from the mantle. 
Question: Where does the lava come from that makes igneous rocks?
[A]: Mantle.


[Q]: Fact: Male gametes are deposited in the vagina during sexual intercourse. 
Question: What are deposited into the vagina during sexual intercourse?
[A]: male gametes.


[Q]: Fact: green plants are also called producers. 
Question: what are also called producers?
[A]:
green plants.