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 scale is used for measuring grams. 
Question: what is a scale used to measure?

Output: grams.


Input: Consider Input: Fact: predicting weather requires meteorology. 
Question: What requires meteorology?

Output: predicting weather.


Input: Consider Input: Fact: Testosterone stimulates the reproductive organs to develop testicles. 
Question: What hormone stimulates the development of testicles?


Output: Testosterone.