What is the relationship between Buick and General Motors in the context of the input sentence. Choose an answer from: 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.

General Motors also plans to shift the production of most other Buick models, except the mid-sized LaCrosse sedan and the large Enclave crossover, to China or Europe soon (read more: General Motors to Sell China-made Buicks in US).

Answer: parent_organization