Utilize the input text as a context reference, choose the right relationship between Sofitel and hotel from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

It has six hotel projects internationally including London and Madrid, and used to operate the Hilton and Sofitel groups in China.

Answer: industry