What is the relationship between Facebook Inc and Mark Zuckerberg in the context of the input sentence. Choose an answer from: 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.

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.

Answer: director_/_manager