What is the relationship between 'Rosneft' and 'Igor Sechin' in the context of the input sentence.
Options: distributed by, chief executive officer, business division, currency

MOSCOW, Sept 4 Rosneft plans to launch the plant to liquefy natural gas (LNG) on Russia's Pacific Island of Sakhalin after 2020, Chief Executive Igor Sechin said in his presentation, behind the initial schedule.
chief executive officer