What is the relationship between 'Facebook' and 'Mark Zuckerberg' in the context of the input sentence.
Options: platform, founded by, distribution format, brand

NEW YORK, July 24 (Reuters) - A federal appeals court on Friday said Facebook Inc officials including Chief Executive Mark Zuckerberg cannot be sued by shareholders who said the social media company concealed threats to its growth prospects before its May 2012 initial public offering.
founded by