Utilize the input text as a context reference, choose the right relationship between Buick and General Motors 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.

Honda 's HR-V, based on the subcompact Fit, has sold over 20,000 copies in the U.S. after just a few months on the market, while General Motors ' ( NYSE:GM ) similarly sized Chevy Trax and Buick Encore have together sold about 70,000 so far in the U.S. in 2015.

Answer: parent_organization