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: Distilling water removes harmful substances before drinking. 
Question: Distilling water removes what before people drink it?

Ex Output:
harmful substances.


Ex Input:
Fact: Phenotypic expression of skin color varies over a wide range. 
Question: Phenotypic what of skin color varies over a wide range?

Ex Output:
expression.


Ex Input:
Fact: The basic necessity of an ecosystem enters in the form of sunlight. 
Question: the basic necessity of an ecosystem enters in the form of what?

Ex Output:

sunlight.