Gavin Newsom and 2015 NBA Champion Golden State Warriors Center, Festus Ezeli, joined Nasdaq officials, CEO Bob Greifeld and Vice Chairman Bruce Aust, in ringing the Closing Bell remotely from San Francisco in celebration of the launch of the Nasdaq Entrepreneurial Center.
What is the relationship between 'Golden State Warriors' and 'San Francisco' in the context of the input sentence.
Options: manufacturer, subsidiary, operator, headquarters location