Utilize the input text as a context reference, choose the right relationship between Wanda Group and Dalian 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.

Baidu Inc, China's dominant Internet search provider, has said it would invest $3.2 billion over the next three years in online-to-offline services, while property conglomerate Dalian Wanda Group said last month its entertainment arm would lead a $1 billion investment in a travel website.

Answer: location_of_formation