Utilize the input text as a context reference, choose the right relationship between Glencore and Ivan Glasenberg from the options. Options: 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.

Billionaire fortune all in where you count The good news is that despite losing around half a billion US dollars in a day, Glencore boss "Aussie" Ivan Glasenberg is still a billionaire in the currencies of all the various countries that claim him as a citizen.

Answer: chief_executive_officer