Utilize the input text as a context reference, choose the right relationship between Facebook and Mark Zuckerberg 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.

In a weekend trip to Silicon Valley, Mr. Modi will be meeting with Google Inc. Chief Executive Sundar Pichai, Facebook Inc. founder Mark Zuckerberg and Apple Inc. Chief Executive Tim Cook, among others.

Answer: founded_by