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. 

Example Input: The outer ear collects sound waves. The sound waves travel from the outer ear to the middle ear. The eardrum changes the sound waves into vibrations. The hammer, anvil, and stirrup bones vibrate. The sound moves to the inner ear. The sound enters the liquid-filled cochlea. The cochlea vibrates. Small hairs in the cochlea move. Nerve signals are created. The brain understands the nerve signals as sound. 
Example Output: How does the human auditory system work?

Example Input: A bird lays an egg. The egg hatches into a baby bird. Baby bird eats. Grows into an adult bird. The bird finds a mate. The pair build a nest. The birds lay eggs. 
Example Output: Describe the life cycle of a bird

Example Input: You start with a glacier. Through warming or other methods a chunk is taken off the glacier. The chunk drifts into the sea. And it settles where it can remain in its state. It is considered an iceberg. 
Example Output:
How do icebergs form?

