Analyze the relationship between 'Angeles' and 'Los Angeles' within the context of the input sentence.
Options: business division, member of, distribution format, location of formation

Joining customers like; Los Angeles County in California, were Los Angeles Water and Power San Bernadino County Employees Retirement Association, the cities of Huntington Park and Dana Point, the University of California Davis, The Santa Ana Unified School District and the Greater Los Angeles VA Medical Center.
location of formation