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: Energy is created by burning either diesel or petrol in a combustion chamber. The energy is transferred from the pistons moving up and down at high speeds. This piston motion is converted to a rotary motion through the crankshaft and axle. The axle turns the wheels. The car moves forward. 

A: Describe how a car works
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Q: Algae and plankton die. The dead algae and plankton end up part of sediment on a seafloor. The sediment breaks down. The bottom layers of sediment become compacted by pressure. Higher pressure causes the sediment to heat up. The heat causes chemical processes. The material becomes a liquid. Is known as oil. Oil moves up through rock. 

A: How does oil form?
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Q: Water gets caught in winds that are moving upward. The water freezes. The water starts to fall. The winds are strong enough from keeping it from falling back to earth. This pattern of rising and falling continues. The hail becomes too large to be pushed up by the wind. The hail finally falls to the ground. 

A:
How does hail form?
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