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.

Example Input: Fact: Invertebrates are animals that lack a support column. 
Question: Invertebrates are animals that lack a what?
Example Output: support column.

Example Input: Fact: competition helps species survive. 
Question: What helps species survive?
Example Output: competition.

Example Input: Fact: ethologists usually study how animals behave in their habitat. 
Question: where to ethologists usually study how animals behave?
Example Output:
habitat.