input question: Answer this question: where did the persian war take place????
output answer: Seeking to secure his empire from further revolts and from the interference of the mainland Greeks, Darius embarked on a scheme to conquer Greece and to punish Athens and Eretria for burning Sardis.

Answer this question: what states have legalized prostitution?
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Answer: Currently, Nevada is the only state to allow brothel prostitution, the terms of which are stipulated in the Nevada Revised Statutes.

Q: Answer this question: what area code is 810?
A: Area code 810 is the telephone area code serving eastern Michigan .

Question: Answer this question: how are public schools funded?
Answer: State schools (also known as public schools or government schools) generally refer to primary or secondary schools mandated for or offered to all children without charge paid for, in whole or in part, by taxation .

[Q]: Answer this question: what is a base SI unit?
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[A]: The seven SI base units and the interdependency of their definitions: for example, to extract the definition of the metre from the speed of light , the definition of the second must be known while the ampere and candela are both dependent on the definition of energy which in turn is defined in terms of length , mass and time .

Problem: Given the question: Answer this question: how much of earth is covered ocean water?
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The answer is:
Approximately 72% of the planet's surface (~3.6x108 km2) is covered by saline water that is customarily divided into several principal oceans and smaller seas, with the ocean covering approximately 71% of the Earth's surface.