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 liver takes in blood from the rest of the body. The liver uses enzymes to clean the blood. The cleaned blood is expelled. The liver creates bile from the items filtered. The liver takes energy and stores it as glycogen. The bile is sent to the intestines. 

SOLUTION: Describe how the liver works

PROBLEM: Comets fly around in outer space. A comet flies close to a planet. The comet enters the planet's atmosphere. The comet crashes into the planet. The energy of the impact creates a hole on the planet. 

SOLUTION: Describe how meteorites create craters on a planet.

PROBLEM: The salt water is heated. As the saltwater is heated the water becomes a gas. The salt particles sink to the bottom of the container. Gaseous water is piped into another container. Allowed to cool. The salt particles are left behind in the first container. The second container contains fresh water. 

SOLUTION:
Describe the process of desalination