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. 

Input: Consider Input: Wind or water breaks small pieces off of a rock. The wind or water deposits tiny rocks. The rocks become known as sediment. The layers of sediment are pressed together by other layers of sediment on top. Minerals from the rocks in the sediment dissolve. Minerals glue the sediment together into a single rock. 

Output: How does sedimentary rock form?


Input: Consider Input: The oil is extracted either onshore or offshore by large oil rigs. Crude oil is transported to a refinery. The refinery turns the crude oil into gasoline. The gasoline is loaded onto tank trucks. The tank trucks go to gas stations all over the place. The gasoline is delivered to the gas station. 

Output: How does oil get from the ground to a gas station?


Input: Consider Input: Coal is crushed. The coal is burned at high temperatures inside a boiler. The heat generated converts water to steam. The steam spins propeller blades in the turbine. The spinning turbine rotates coils in the generator. The rotating coils produce electricity. The electricity can be sent through the power grid. 


Output: How does a coal-powered power station generate electricity?