Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: A tweet by entrepreneur Elon Musk suggesting children are "essentially immune" to coronavirus did not break Twitter's rules, the company has said.

Coronavirus: Elon Musk 'child immunity' tweet will stay online