Utilize the input text as a context reference, choose the right relationship between 'Boeing' and 'SEATTLE' from the options.
Options: operator, location of formation, owner of, chairperson

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.
location of formation