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: space exploration is not possible without navigation. 
Question: What is used for space exploration?

Output: navigation.


Input: Consider Input: Fact: Faulting of rock in the Earth's crust can cause a tsunami. 
Question: What can be caused by a faulting of the earth's crust?

Output: a tsunami.


Input: Consider Input: Fact: Flower petals and fruits make and store pigments. 
Question: What can make and store pigments?


Output: flower petals and fruits.