instruction:
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.
question:
Fact: Distilling water removes harmful substances before drinking. 
Question: Distilling water removes what before people drink it?
answer:
harmful substances.


question:
Fact: proteins contain genes. 
Question: what do proteins contain?
answer:
genes.


question:
Fact: Fractures are formed as a consequence of osteoclasts becoming more active than osteoblasts. 
Question: What can cause a disease where the consequence is that osteoclasts become too active?
answer:

osteoclasts.