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: a seismometer can predict destruction. 
Question: What can a seismometer predict?
answer:
destruction.


question:
Fact: A vehicle in use requires navigation. 
Question: A vehicle in use requires?
answer:
navigation.


question:
Fact: When something that starts as a small disturbance moving westward off Africa then moves over land, it will decrease in strength. 
Question: Where does something that decreases in strength when moving over land start?
answer:

west of Africa.