July 30 (Reuters) - Indoor cycling fitness chain SoulCycle Inc filed with U.S. regulators for an initial public offering of common stock, underscoring the rising popularity of boutique chains that cater to specific workout methods such as spinning, yoga and barre.
Take context from the input text and decide on the accurate relationship between 'SoulCycle' and 'Indoor cycling' from the options provided.
Options: parent organization, creator, location of formation, industry