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: Using hydropower reduces greenhouse gases. 
Question: What does hydropower help reduce?

Output: Greenhouse gases.


Input: Consider Input: Fact: Stimuli can cause the brain to experience pain. 
Question: What can cause the brain to experience pain?

Output: stimuli.


Input: Consider Input: Fact: If something is black then it absorbs all different wavelengths of light. 
Question: If something is what, then it absorbs all different wavelengths of light?


Output: black.