Utilize the input text as a context reference, choose the right relationship between 'Nintendo' and 'Satoru Iwata' from the options.
Options: employer, platform, stock exchange, chief executive officer

Nintendo President Satoru Iwata dies of tumor Nintendo President Satoru Iwata dies after leading Japan game company through success, woes By Yuri Kageyama, AP Business Writer 4 hours ago  .
chief executive officer