Refer to the input text as context and select the correct relationship between 'Airbnb' and 'Brian Chesky' from the available options.
Options: director/manager, legal form, founded by, original broadcaster

Airbnb chief Brian Chesky was willing to sell a 10 per cent stake in his company for $150,000 in 2008 - it is now valued at around $US25b.
founded by