Given the task definition and input, reply with output. In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

Sentence: Atomic emission spectrum do you call the pattern of lines formed when light passes through a prism to separate it into the different frequencies of light it contains. Question: What do you call the pattern of lines formed when light passes through a prism to separate it into the different frequencies of light it contains?
atomic emission spectrum