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: Sound enters the ears of a person. The sound hits a drum that is inside the ear. The drum inside the ear converts the sound to electrical impulses. The electrical impulses are sent to the brain. The brain can decode the impulses into sound. 
A: 
How does the human auditory system work?