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. 

Ex Input:
Muscles work by expanding and contracting. A muscle fiber gets a signal from its nerve. Proteins and chemicals release energy to either contract the muscle or relax it. When the muscles contracts the bones connected to he muscle are pulled closer together. When the muscle relaxes the bones move farther apart. 

Ex Output:
How do muscles work?


Ex Input:
Get some pumpkin seeds. Plant the pumpkin seeds in soil. Water the plant if it starts to dry out. Don't water directly on the leaves. Male flowers appear. Female flowers are open for one day. Pumpkins mature 85-125 days after planting. 

Ex Output:
What are the steps involved in growing a pumpkin?


Ex Input:
Air rises. Rising air cools. Water vapor forms. Water vapor condenses. Clouds form. 

Ex Output:

How are clouds formed?