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: A bicycle is a vehicle that requires smooth surfaces. 
Question: What kind of surface does a bicycle require to ride on?

Output: smooth.


Input: Consider Input: Fact: if something is outside during the day then that something will receive energy from the sun. 
Question: If something is outside during the day then that something will receive what?

Output: energy from the sun.


Input: Consider Input: Fact: Gases released during the use of fossil fuels causes climatic oscillation and bad weather. 
Question: What is released during the use of fossil fuels that causes climatic oscillation and bad weather?


Output: gases.