Utilize the input text as a context reference, choose the right relationship between chief and New York City 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.

Mr Murdoch is a big admirer of Joel Klein, Amplify’s chief executive and the former head of education for New York City but the potential sale or winding down of News Corp’s involvement suggests that there are limits to that admiration.

Answer: location_of_formation