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: High pressure systems cause calm weather conditions. 
Question: High pressure systems cause what weather conditions?

Output: calm.


Input: Consider Input: Fact: passive immunity lasts only as long as the antibodies survive in blood. 
Question: passive immunity lasts only as long as the antibodies survive where?

Output: blood.


Input: Consider Input: Fact: mammal learn to behave by having fun. 
Question: How do mammals learn to behave?


Output: Having fun.