What is the relationship between Phil Knight and Nike 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.

June 30 (Reuters) - Nike Inc, the world's largest sports shoe company, said Chairman and co-founder Phil Knight would step down next year.

Answer: employer