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: Animals require alleles for warmth. 
Question: Animals require warmth as encoded on what?

Output: alleles.


Input: Consider Input: Fact: planes can measure wind speed. 
Question: what can measure wind speed?

Output: planes.


Input: Consider Input: Fact: Tropical cyclones convert heat energy into mechanical energy. 
Question: What's an example of something that converts heat energy into mechanical energy?


Output: Tropical cyclone.