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.

Input: Consider Input: Fact: parasites can cause harmful diseases. 
Question: certain diseases can be caused by what?

Output: parasites.


Input: Consider Input: Fact: Chemical weathering causes FE in rock to oxidize. 
Question: Chemical weathering causes what in rock to oxidize?

Output: Fe.


Input: Consider Input: Fact: Scientists who find and study things not known in Iceland are paleontologists. 
Question: Paleontologists find and study things that have not been found where?


Output: Iceland.