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: Coal mining is "unlikely" to have caused a pavement to collapse, exposing a four metre-deep hole on a residential street, a report has said.

Sinkhole in Nantyffyllon 'unlikely' to be mining related