What is the relationship between Rosneft and Igor Sechin 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.

VLADIVOSTOK, Russia, Sept 4 (Reuters) - Russia can increase its oil production to as much as 700 million tonnes of oil per year (14 million barrels of oil per day) and export 300 billion cubic metres of gas to China annually, Rosneft Chief Executive Igor Sechin said on Friday.

Answer: chief_executive_officer