In this task, you are given a paragraph, and your task is to construct a question from the given passage. Construct question in such a way that (i) it is well explained in the paragraph, (ii) the words may/may not be present in the paragraph, (iii) it should start with what/how/describe. Avoid creating a question that (i) is just relevant to one or two sentences, and (ii) not relevant to passage. 

[Q]: The moon orbits the earth. The earth orbits the sun. The moon comes between the sun and the earth. The sun is totally blocked. A solar eclipse is occurring. 
[A]: How do solar eclipses occur?


[Q]: Sugar enters the body. Bloodstream. The pancreas. Insulin lower sugar levels. Bloo sugar goes back to normal. 
[A]: How does the body control its blood sugar level?


[Q]: The coal is pulverized to a very fine powder. The coal powder is mixed with hot air and blown into the firebox of the boiler. Water pumped through pipes inside the boiler is turned into steam by the heat. The pressure of the steam pushing against a series of giant blades turns the turbine shaft. Turbine shaft is connected to the shaft of the generator. The magnets inside the generator spin within wire coils to produce electricity. 
[A]:
How does a coal-powered power station generate electricity?