Petaluma Transit
The system connects with several Sonoma County Transit routes for further travel within the county , Golden Gate Transit routes for travel between the city , Marin County , and San Francisco , and Sonoma County Airport Express routes for travel between the city , Oakland International Airport , and San Francisco International Airport . 
<triplet> International Airport <subj> Oakland <obj> located in the administrative territorial entity <triplet> International Airport <subj> San Francisco <obj> place served by transport hub <subj> San Francisco <obj> place served by transport hub