Refer to the input text as context and select the correct relationship between 'Facebook' and 'Mark Zuckerberg' from the available options.
Options: director/manager, founded by, location of formation, developer

In California, he will hold a public meeting with Facebook (NasdaqGS: FB - news ) founder Mark Zuckerberg at the social network's headquarters, and visit tech giant Google (Xetra: A0B7FY - news ) and electric car and battery innovator Tesla.
founded by