Utilize the input text as a context reference, choose the right relationship between Samsung Electronics and Seoul 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.

Seoul dropped 0.73 percent, hurt by selling in heavyweight Samsung Electronics after it reported disappointing earnings.

Answer: location_of_formation