What is the relationship between Boeing and SEATTLE 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.

SEATTLE (Reuters) - Boeing Co (BA.N), which loses about $30 million on every 787 Dreamliner passenger jet that leaves the factory, is trying to stem the losses by cutting the use of one of its signature ingredients: titanium.

Answer: headquarters_location