Utilize the input text as a context reference, choose the right relationship between Jean Claude Juncker and President of the European Commission 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.

Latest plan President of the European Commission Jean Claude Juncker was announcing details of the latest plan this week.

Answer: position_held