I don't have any specific information about a fire in a dancing hall starting in a particular way. Fires can start due to various causes in public venues like dance halls, but without more context I can't speculate on the details of how it may have occurred in this case. Some common potential causes of fires in buildings include electrical malfunctions, cooking equipment, smoking materials, or candles. But again, I don't have reliable facts about this specific incident. If you're looking for information on a particular fire, it would be best to consult news reports or official investigations if available. Let me know if you need any other general information about fire safety in public spaces that I can assist with.