Utilize the input text as a context reference, choose the right relationship between Diageo and Johnnie Walker 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.

China Slowdown European consumer-product companies also are suffering from the slowdown in China and other emerging markets, so their share prices have been depressed, said Herro, who owns shares in Diageo Plc, the maker of Guinness stout and Johnnie Walker whisky, and Cie. Financiere Richemont SA, the Swiss manufacturer of Cartier jewelry and Montblanc pens.

Answer: owner_of