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: Something produced by the Sun has a negative impact on an organism. 
Question: What has a negative impact on an organism?

Ex Output:
sun.


Ex Input:
Fact: lightning ignites fires. 
Question: what can lightning ignite?

Ex Output:
fires.


Ex Input:
Fact: Emergency lighting source requires a source of electricity to produce light. 
Question: What requires a source of electricity to produce light?

Ex Output:

An emergency lighting source.