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.

Ex Input:
Fact: hiding can be used for avoiding early mortality. 
Question: hiding can be used for avoiding?

Ex Output:
early mortality.


Ex Input:
Fact: CPU time can be used as a clock. 
Question: What computer component can you use to measure time?

Ex Output:
CPU.


Ex Input:
Fact: Ancestors of a type of jawless fish which is parasitic are thought to have been the earliest vertebrates. 
Question: Ancestors of a jawless fish which is parasitic are thought to have been the earliest what?

Ex Output:

vertebrates.