TASK DEFINITION: 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. 
PROBLEM: The coal is placed in a heater. The coal is super heated. The heat is connected to a boiler. The boiler is full of water. The heat turns the water into steam. The steam turns a generator. The generator produces the electricity. 

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

PROBLEM: The farmer chooses a crop that will grow well in his region. The farmer tills the soil to loosen it. The farmer spreads seeds. The farmer tills again to plant the seeds. Crops grow. 

SOLUTION: Describe the process of planting crops.

PROBLEM: Water vapor is in warm air. The warm air cools. The warm air expands. The water vapor in the air condenses. The water vapor forms water droplets or ice crystals. 

SOLUTION:
How are clouds formed?

