user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: Which timezone is the San Francisco airport in? 
Knowledge Triplets: Renaissance San Francisco Stanford Court Hotel, location.location.street_address, m.0p0nnx7
4INFO  Headquarters, location.location.nearby_airports, San Francisco International Airport
Michigan, location.location.time_zones, Central Time Zone
Chamorro Time Zone, time.time_zone.locations_in_this_time_zone, Guam
San Francisco International Airport, aviation.airport.airlines, m.025b87q
Time zone(s), type.property.schema, Location
Courtyard San Francisco Airport/Oyster Point  Waterfront, location.location.nearby_airports, San Francisco International Airport
San Francisco International Airport, film.film_location.featured_in_films, Magnum Force
United Airlines, aviation.airline.airports_served, m.025b87q
San Francisco, location.location.containedby, United States of America
Pennsylvania, location.location.time_zones, Eastern Time Zone
Courtyard San Mateo Foster City, location.location.nearby_airports, San Francisco International Airport
San Francisco International Airport, aviation.airport.focus_city_for, LAN Airlines
San Francisco, base.biblioness.bibs_topic.is_really, San Francisco
Missouri, location.location.time_zones, Central Time Zone
San Francisco, base.biblioness.bibs_location.state, California
Residence Inn San Francisco Airport/Oyster Point Waterfront, common.topic.webpage, m.0n28x5b
Mississippi, location.location.time_zones, Central Time Zone
San Diego International Airport, common.topic.notable_types, Airport
Michigan, location.location.time_zones, Eastern Time Zone
San Francisco International Airport, aviation.airport.serves, Courtyard San Francisco Airport/Oyster Point  Waterfront
m.0110h30m, location.location.geolocation, m.0110h35z
San Francisco International Airport, aviation.airport.serves, Courtyard San Mateo Foster City
High Anxiety, film.film.featured_film_locations, Los Angeles International Airport
4INFO  Headquarters, location.location.time_zones, Pacific Time Zone
Residence Inn San Francisco Airport/Oyster Point Waterfront, travel.hotel.operated_by, Marriott International
International Terminal of San Francisco International Airport2, common.image.appears_in_topic_gallery, San Francisco International Airport
United Airlines, aviation.airline.hubs, Los Angeles International Airport
Los Angeles International Airport, aviation.airport.hub_for, United Airlines
m.0110h30m, location.location.nearby_airports, San Carlos Airport
Courtyard San Francisco Airport, location.location.street_address, m.0x1lnz3
Guam, location.location.time_zones, Chamorro Time Zone
Magnum Force, film.film.featured_film_locations, San Francisco International Airport
m.0110h30m, location.mailing_address.citytown, San Mateo
SkyWest Airlines, aviation.airline.hubs, Los Angeles International Airport
m.01xptnz, aviation.airport_runway.surface, Asphalt
Best Western Premier Ivy Hotel Napa Valley, location.location.time_zones, Pacific Time Zone
Canada, freebase.valuenotation.is_reviewed, Time zone(s)
Hawaii, location.location.time_zones, Hawaii-Aleutian Time Zone
United States of America, location.location.time_zones, Eastern Time Zone
San Francisco, location.administrative_division.country, United States of America
Chamorro Time Zone, time.time_zone.locations_in_this_time_zone, United States of America
United p.s., aviation.airline.focus_cities, San Francisco International Airport
Courtyard San Francisco Larkspur Landing/Marin County, travel.accommodation.accommodation_type, Hotel
Hyatt Regency San Francisco Airport, location.location.contains, Knuckles Sports Bar
San Francisco International Airport, aviation.airport.hub_for, Pacific Air Lines
Oklahoma, location.location.time_zones, Central Time Zone
Sacramento Executive Airport, location.location.containedby, United States of America
South Dakota, location.location.time_zones, Central Time Zone
4INFO  Headquarters, location.location.time_zones, Pacific Time Zone
Kentucky, location.location.time_zones, Central Time Zone
Idaho, location.location.time_zones, Pacific Time Zone
United States of America, location.location.partiallycontains, m.0wjpmbd
South Dakota, freebase.valuenotation.is_reviewed, Time zone(s)
Northern Mariana Islands, location.location.time_zones, Chamorro Time Zone
Oregon, location.location.time_zones, Mountain Time Zone
Los Angeles International Airport, aviation.airport.focus_city_for, Ted
Residence Inn San Francisco Airport/Oyster Point Waterfront, common.topic.notable_for, g.125f54674
Hyatt Regency San Francisco Airport, location.location.nearby_airports, San Francisco International Airport
California, location.location.time_zones, Pacific Time Zone
Rocky Mountains, location.location.time_zones, Central Time Zone
George Bush Intercontinental Airport, location.location.containedby, United States of America
Asiana Airlines Flight 214, time.event.locations, San Francisco International Airport
San Carlos Airport, common.topic.notable_types, Airport
San Francisco International Airport, location.location.containedby, United States of America
m.07w1_k9, base.newsevents.news_report.event, 2007 San Francisco International Airport runway incursion
Rocky Mountains, location.location.time_zones, Pacific Time Zone
Airport, freebase.type_hints.included_types, Location
2007 San Francisco International Airport runway incursion, common.topic.article, m.02vq11g
Courtyard San Francisco Airport/Oyster Point  Waterfront, common.topic.notable_types, Accommodation
North America, location.location.time_zones, Mountain Time Zone
San Francisco International Airport, aviation.airport.serves, The Lodge at Sonoma Renaissance Resort & Spa
m.0110h30m, location.location.time_zones, Pacific Time Zone
United p.s., aviation.airline.focus_cities, Los Angeles International Airport
Los Angeles International Airport, aviation.airport.hub_for, SkyWest Airlines
Saint Thomas, freebase.valuenotation.is_reviewed, Time zone(s)
Oakland International Airport, location.location.containedby, United States of America
High Anxiety, film.film.featured_film_locations, San Francisco International Airport
Johnston Atoll, location.location.time_zones, Hawaii-Aleutian Time Zone
Indiana, location.location.time_zones, Eastern Time Zone
m.01xptng, aviation.airport_runway.surface, Asphalt
Northern Mariana Islands, freebase.valuenotation.is_reviewed, Time zone(s)
San Francisco International Airport, aviation.airport.hub_for, Pacific Southwest Airlines
San Carlos Airport, location.location.time_zones, Pacific Time Zone
Courtyard San Francisco Airport, travel.accommodation.accommodation_type, Hotel
m.04fnprn, travel.transportation.mode_of_transportation, Air travel
Pacific Southwest Airlines Flight 1771, aviation.airliner_accident.flight_destination, San Francisco International Airport
San Francisco International Airport, aviation.airport.serves, m.0110h30m
San Francisco International Airport, common.topic.image, SFOApril2005
Saint Croix, U.S. Virgin Islands, location.location.time_zones, Atlantic Time Zone
North America, location.location.time_zones, Atlantic Time Zone
United States of America, location.location.time_zones, Pacific Time Zone
United States of America, location.location.time_zones, Atlantic Time Zone
San Francisco, base.biblioness.bibs_location.country, United States of America
Alaska, freebase.valuenotation.is_reviewed, Time zone(s)
San Francisco International Airport, common.topic.notable_for, g.1255x3kbq
Alaska, location.location.time_zones, Hawaii-Aleutian Time Zone
San Francisco International Airport, aviation.airport.serves, 4INFO  Headquarters
Virginia, location.location.time_zones, Eastern Time Zone
Courtyard San Francisco Airport/Oyster Point  Waterfront, travel.hotel.operated_by, Marriott International
Los Angeles International Airport, aviation.airport.focus_city_for, Pan American World Airways
Oakland International Airport, aviation.airport.serves, The Lodge at Sonoma Renaissance Resort & Spa
Saint Croix, U.S. Virgin Islands, freebase.valuenotation.is_reviewed, Time zone(s)
Hyatt Regency San Francisco Airport, location.location.contains, Cascades Wine Bar
San Carlos Airport, aviation.airport.serves, 4INFO  Headquarters
Residence Inn San Francisco Airport/Oyster Point Waterfront, common.topic.image, residence-inn-san-francisco-ca-hotel-exterior.jpg
Texas, location.location.time_zones, Mountain Time Zone
United States of America, location.location.partiallycontains, m.012m7x6t
Residence Inn San Francisco Airport/Oyster Point Waterfront, location.location.nearby_airports, San Francisco International Airport
Los Angeles International Airport, aviation.airport.hub_for, United p.s.
San Francisco International Airport, aviation.airport.hub_for, United p.s.
Rhode Island, location.location.time_zones, Eastern Time Zone
Pacific Southwest Airlines, aviation.airline.hubs, Los Angeles International Airport
San Francisco International Airport, aviation.aviation_waypoint.waypoint_type, Airport
San Francisco International Airport, location.location.containedby, San Francisco
Renaissance San Francisco Stanford Court Hotel, location.location.geolocation, m.0p0nm_s
John F. Kennedy International Airport, aviation.airport.serves, New York City
Kansas, location.location.time_zones, Mountain Time Zone
San Francisco International Airport, common.topic.image, International Terminal of San Francisco International Airport2
Hyatt Regency San Francisco Airport, travel.hotel.drinking_establishments, Knuckles Sports Bar
San Francisco International Airport, aviation.airport.serves, Best Western Premier Ivy Hotel Napa Valley
United p.s., aviation.airline.hubs, San Francisco International Airport
Courtyard San Francisco Larkspur Landing/Marin County, travel.hotel.operating_brand, Courtyard by Marriott
San Francisco International Airport, aviation.airport.airport_type, Public airport
United States of America, location.location.partiallycontains, m.012m7xfc
Renaissance San Francisco Stanford Court Hotel, location.location.nearby_airports, Oakland International Airport
Americas, freebase.valuenotation.is_reviewed, Time zone(s)
m.0110h30m, location.location.time_zones, Pacific Time Zone
Courtyard San Francisco Larkspur Landing/Marin County, common.topic.notable_for, g.12vqg_7c4
San Francisco, location.location.time_zones, Pacific Time Zone
San Francisco International Airport, aviation.airport.hub_for, SkyWest Airlines
Renaissance San Francisco Stanford Court Hotel, common.topic.article, m.02q7byj
San Francisco, location.location.time_zones, Pacific Time Zone
Utah, location.location.time_zones, Mountain Time Zone
Residence Inn San Francisco Airport/Oyster Point Waterfront, location.location.street_address, m.0n28v4x
New Mexico, location.location.time_zones, Mountain Time Zone
San Francisco International Airport, aviation.airport.serves, Hyatt Regency San Francisco Airport
North Carolina, location.location.time_zones, Eastern Time Zone
Pacific Air Lines, aviation.airline.hubs, San Francisco International Airport
m.04fnprn, travel.transportation.transport_terminus, San Francisco International Airport
San Mateo County, location.location.time_zones, Pacific Time Zone
Oakland County, location.location.time_zones, Eastern Time Zone
North Dakota, location.location.time_zones, Central Time Zone
Chicago, location.location.time_zones, Central Time Zone
Virgin America, aviation.airline.hubs, San Francisco International Airport
Public airport, aviation.airport_type.airports_of_this_type, San Francisco International Airport
San Francisco International Airport, common.topic.webpage, m.045xcv4
Virgin America, aviation.airline.focus_cities, San Diego International Airport
North Dakota, location.location.time_zones, Mountain Time Zone
George Bush Intercontinental Airport, aviation.airport.focus_city_for, Pan American World Airways
Sacramento Executive Airport, aviation.airport.hub_for, Pacific Air Lines
San Francisco International Airport, film.film_location.featured_in_films, Funny People
Asiana Airlines Flight 214, aviation.airliner_accident.flight_destination, San Francisco International Airport
Los Angeles International Airport, location.location.time_zones, Pacific Time Zone
Texas, freebase.valuenotation.is_reviewed, Time zone(s)
Los Angeles International Airport, aviation.airport.hub_for, Pacific Southwest Airlines
Nebraska, location.location.time_zones, Central Time Zone
United States of America, location.location.time_zones, Mountain Time Zone
Americas, location.location.time_zones, Mountain Time Zone
San Francisco International Airport, aviation.airport.runway_information, m.01xptnz
Palmyra Atoll, location.location.time_zones, Samoa Time Zone
United States of America, location.location.partiallycontains, m.012m7x79
New Jersey, location.location.time_zones, Eastern Time Zone
United States of America, location.location.adjoin_s, m.02sjtvg
Residence Inn San Francisco Airport/Oyster Point Waterfront, location.location.geolocation, m.0n28vf2
Pan American World Airways, aviation.airline.focus_cities, George Bush Intercontinental Airport
Los Angeles International Airport, aviation.airport.hub_for, Virgin America
San Francisco International Airport, location.location.geolocation, m.02wt5r7
Canada, location.location.time_zones, Eastern Time Zone
Los Angeles International Airport, aviation.airport.hub_for, United Express
Los Angeles International Airport, aviation.airport.airport_type, Public airport
m.01xptng, aviation.airport_runway.airport, San Francisco International Airport
San Francisco International Airport, common.topic.image, San Francisco International Airport
O'Hare International Airport, aviation.airport.focus_city_for, Ted
San Carlos Airport, location.location.containedby, San Mateo County
Illinois, location.location.time_zones, Central Time Zone
San Carlos Airport, aviation.airport.serves, m.0110h30m
Oakland International Airport, travel.transport_terminus.travel_destinations_served, m.04fnprn
What's Up, Doc?, film.film.featured_film_locations, San Francisco
San Francisco International Airport, aviation.airport.serves, Courtyard San Francisco Larkspur Landing/Marin County
United States of America, location.location.partiallycontains, m.0wg940v
m.0n28x5b, common.webpage.topic, Residence Inn San Francisco Airport/Oyster Point Waterfront
Courtyard San Francisco Larkspur Landing/Marin County, location.location.street_address, m.0x0k336
Tennessee, location.location.time_zones, Eastern Time Zone
San Francisco International Airport, location.location.containedby, California
San Francisco International Airport, aviation.airport.serves, m.0110h30m
San Francisco International Airport, aviation.airport.hub_for, United Airlines
United p.s., aviation.airline.hubs, Los Angeles International Airport
San Francisco International Airport, aviation.airport.serves, Courtyard San Francisco Airport
Chamorro Time Zone, time.time_zone.locations_in_this_time_zone, Northern Mariana Islands
Oakland International Airport, aviation.airport.serves, Renaissance San Francisco Stanford Court Hotel
Oakland International Airport, common.topic.notable_types, Airport
Samoa Time Zone, time.time_zone.locations_in_this_time_zone, United States of America
Virgin America, aviation.airline.hubs, Los Angeles International Airport
San Francisco International Airport, aviation.airport.focus_city_for, Ted
San Francisco International Airport, aviation.airport.focus_city_for, Virgin America
Arlington County, location.location.time_zones, Eastern Time Zone
Best Western Premier Ivy Hotel Napa Valley, location.location.nearby_airports, San Francisco International Airport
Alaska, location.location.time_zones, Alaska Time Zone
Maryland, location.location.time_zones, Eastern Time Zone
Courtyard San Francisco Airport, location.location.nearby_airports, San Francisco International Airport
Courtyard San Francisco Airport, common.topic.notable_for, g.12v_h4zsc
Americas, location.location.time_zones, Alaska Time Zone
San Francisco International Airport, common.image.appears_in_topic_gallery, San Francisco International Airport
San Francisco, location.location.containedby, California
United Airlines, aviation.airline.hubs, San Francisco International Airport
Courtyard San Mateo Foster City, travel.accommodation.accommodation_type, Hotel
Delaware, location.location.time_zones, Eastern Time Zone
San Francisco International Airport, aviation.airport.runway_information, m.01xptp6
United States of America, location.location.partiallycontains, m.012m7x7k
Samoa Time Zone, time.time_zone.locations_in_this_time_zone, Palmyra Atoll
The Lodge at Sonoma Renaissance Resort & Spa, location.location.nearby_airports, San Francisco International Airport
Courtyard San Mateo Foster City, travel.hotel.operated_by, Marriott International
San Francisco International Airport, aviation.airport.serves, Renaissance San Francisco Stanford Court Hotel
Indiana, location.location.time_zones, Central Time Zone
Saint Thomas, location.location.time_zones, Atlantic Time Zone
Renaissance San Francisco Stanford Court Hotel, common.topic.notable_types, Accommodation
Courtyard San Francisco Airport/Oyster Point  Waterfront, location.location.street_address, m.0wk271c
Hawaii, freebase.valuenotation.is_reviewed, Time zone(s)
San Francisco International Airport, film.film_location.featured_in_films, What's Up, Doc?
Magnum Force, film.film.featured_film_locations, San Francisco
Hyatt Regency San Francisco Airport, travel.accommodation.accommodation_type, Hotel
San Mateo County, location.location.time_zones, Pacific Time Zone
San Francisco International Airport, aviation.airport.serves, Best Western Premier Ivy Hotel Napa Valley
United States of America, location.location.partiallycontains, m.0wkfv0n
Residence Inn San Francisco Airport/Oyster Point Waterfront, common.topic.notable_types, Accommodation
San Francisco International Airport, location.location.containedby, United States of America
Canada, location.location.time_zones, Atlantic Time Zone
Manhattan, location.location.time_zones, Eastern Time Zone
Pacific Southwest Airlines, aviation.airline.hubs, San Diego International Airport
New York City, location.location.time_zones, Eastern Time Zone
San Francisco International Airport, travel.transport_terminus.travel_destinations_served, m.04fnprn
Renaissance San Francisco Stanford Court Hotel, travel.hotel.operated_by, Marriott International
Kentucky, location.location.time_zones, Eastern Time Zone
Connecticut, location.location.time_zones, Eastern Time Zone
Renaissance San Francisco Stanford Court Hotel, common.topic.image, san-francisco-nob-hill-hotel
Canada, location.location.time_zones, Mountain Time Zone
Massachusetts, location.location.time_zones, Eastern Time Zone
San Francisco International Airport, location.location.street_address, m.0w_sn90
San Francisco International Airport, base.schemastaging.context_name.pronunciation, m.01316ql_
Tennessee, location.location.time_zones, Central Time Zone
Florida, location.location.time_zones, Eastern Time Zone
Colorado River, location.location.time_zones, Pacific Time Zone
United Express, aviation.airline.hubs, Los Angeles International Airport
San Mateo, base.biblioness.bibs_location.country, United States of America
Courtyard San Francisco Larkspur Landing/Marin County, location.location.nearby_airports, San Francisco International Airport
Guam, freebase.valuenotation.is_reviewed, Time zone(s)
United States of America, location.location.adjoin_s, m.02wtp8v
Arkansas, location.location.time_zones, Central Time Zone
m.0110h30m, location.mailing_address.state_province_region, California
Alabama, location.location.time_zones, Central Time Zone
San Francisco International Airport, aviation.airport.serves, San Mateo County
m.01xptp6, aviation.airport_runway.airport, San Francisco International Airport
What's Up, Doc?, film.film.featured_film_locations, San Francisco International Airport
Colorado, location.location.time_zones, Mountain Time Zone
Nevada, location.location.time_zones, Pacific Time Zone
2007 San Francisco International Airport runway incursion, time.event.locations, San Francisco International Airport
Los Angeles International Airport, aviation.airport.focus_city_for, United p.s.
Georgia, location.location.time_zones, Eastern Time Zone
Colorado, freebase.valuenotation.is_reviewed, Time zone(s)
Pacific Air Lines, aviation.airline.hubs, Sacramento Executive Airport
United States of America, location.location.time_zones, Hawaii-Aleutian Time Zone
San Francisco International Airport, common.image.size, m.0klk12
Texas, location.location.time_zones, Central Time Zone
San Diego International Airport, aviation.airport.hub_for, Pacific Southwest Airlines
San Francisco, location.citytown.postal_codes, 94128
Canada, location.location.time_zones, Pacific Time Zone
m.0704q80, location.mailing_address.citytown, San Francisco
Montana, location.location.time_zones, Mountain Time Zone
San Francisco International Airport, location.location.events, Asiana Airlines Flight 214
Courtyard San Francisco Airport/Oyster Point  Waterfront, location.location.geolocation, m.0wk26gn
St. Clair County, location.location.time_zones, Central Time Zone
Pacific Southwest Airlines, aviation.airline.hubs, San Francisco International Airport
Courtyard San Francisco Airport/Oyster Point  Waterfront, travel.hotel.restaurants_in_hotel, The Bistro
Location, type.type.properties, Time zone(s)
Time zone(s), rdf-schema#domain, Location
San Mateo County, location.location.nearby_airports, San Francisco International Airport
Johnston Atoll, freebase.valuenotation.is_reviewed, Time zone(s)
North America, location.location.time_zones, Central Time Zone
Minnesota, location.location.time_zones, Central Time Zone
San Mateo, location.location.time_zones, Pacific Time Zone
New Orleans, location.location.time_zones, Central Time Zone
m.01xptp6, aviation.airport_runway.surface, Asphalt
m.045xcv4, common.webpage.topic, San Francisco International Airport
North America, location.location.time_zones, Alaska Time Zone
Louisiana, location.location.time_zones, Central Time Zone
2007 San Francisco International Airport runway incursion, aviation.airliner_accident.accident_type, Runway incursion
San Francisco International Airport, aviation.airport.focus_city_for, Pan American World Airways
Wisconsin, location.location.time_zones, Central Time Zone
Hyatt Regency San Francisco Airport, common.topic.notable_types, Accommodation
Rocky Mountains, location.location.time_zones, Mountain Time Zone
United States of America, location.country.administrative_divisions, San Francisco
San Francisco International Airport, aviation.airport.runway_information, m.01xptnq
Oregon, location.location.time_zones, Pacific Time Zone
San Francisco International Airport, common.topic.article, m.01l4xt
South Carolina, location.location.time_zones, Eastern Time Zone
Hyatt Regency San Francisco Airport, travel.hotel.drinking_establishments, Cascades Wine Bar
Washington Dulles International Airport, location.location.containedby, United States of America
California, location.location.time_zones, Pacific Time Zone
San Mateo, location.location.containedby, California
Samoa Time Zone, time.time_zone.locations_in_this_time_zone, American Samoa
m.01xptnz, aviation.airport_runway.airport, San Francisco International Airport
Courtyard San Francisco Airport, travel.hotel.operating_brand, Courtyard by Marriott
Courtyard San Francisco Airport/Oyster Point  Waterfront, common.topic.notable_for, g.1jlfwdqdq
San Francisco International Airport, aviation.airport.serves, San Francisco
Buena Vista city, location.location.time_zones, Eastern Time Zone
New York, location.location.time_zones, Eastern Time Zone
Pan American World Airways, aviation.airline.focus_cities, Los Angeles International Airport
Courtyard San Francisco Larkspur Landing/Marin County, common.topic.notable_types, Accommodation
San Francisco, base.biblioness.bibs_topic.subsumes, San Francisco
2007 San Francisco International Airport runway incursion, common.topic.notable_types, Event
Los Angeles International Airport, film.film_location.featured_in_films, High Anxiety
United States of America, location.location.partiallycontains, m.0wg93vr
United States of America, location.location.adjoin_s, m.02wj9bp
O'Hare International Airport, location.location.containedby, United States of America
Vermont, location.location.time_zones, Eastern Time Zone
Colorado River, location.location.time_zones, Mountain Time Zone
Mount Cook, location.location.time_zones, Pacific Time Zone
Barnstable County, location.location.time_zones, Eastern Time Zone
John F. Kennedy International Airport, location.location.containedby, United States of America
United States of America, location.location.time_zones, Chamorro Time Zone
2007 San Francisco International Airport runway incursion, common.topic.image, Sfo runway incursion aircraft
Sacramento Executive Airport, location.location.containedby, California
m.04fnprn, travel.transportation.travel_destination, San Francisco
Courtyard San Francisco Airport, common.topic.notable_types, Accommodation
San Mateo, location.location.containedby, United States of America
Marshall Islands, freebase.valuenotation.is_reviewed, Time zone(s)
Denver International Airport, location.location.containedby, United States of America
Maine, location.location.time_zones, Eastern Time Zone
United States of America, location.location.partiallycontains, m.0wjpm7k
San Francisco, film.film_location.featured_in_films, What's Up, Doc?
United States of America, location.location.time_zones, Alaska Time Zone
San Francisco International Airport, film.film_location.featured_in_films, High Anxiety
San Francisco International Airport, aviation.airport.serves, 4INFO  Headquarters
Nevada, location.location.time_zones, Mountain Time Zone
United States of America, location.location.time_zones, Samoa Time Zone
San Francisco, location.us_county.county_seat, San Francisco
Courtyard San Francisco Airport/Oyster Point  Waterfront, travel.hotel.operating_brand, Courtyard by Marriott
2007 San Francisco International Airport runway incursion, common.topic.image, US Airways E170 DCA N809MD
Renaissance San Francisco Stanford Court Hotel, common.topic.notable_for, g.12553vmkl
Americas, location.location.time_zones, Pacific Time Zone
San Francisco International Airport, location.location.containedby, California
Sacramento Executive Airport, common.topic.notable_types, Airport
LAN Airlines, aviation.airline.focus_cities, San Francisco International Airport
Red River of the North, location.location.time_zones, Central Time Zone
West Virginia, location.location.time_zones, Eastern Time Zone
m.0110h30m, location.location.nearby_airports, San Francisco International Airport
Denver International Airport, location.location.time_zones, Mountain Time Zone
Americas, location.location.time_zones, Atlantic Time Zone
SFOApril2005, common.image.appears_in_topic_gallery, San Francisco International Airport
Cowlitz County, freebase.valuenotation.is_reviewed, Time zone(s)
Hyatt Regency San Francisco Airport, location.location.nearby_airports, Oakland International Airport
American Samoa, location.location.time_zones, Samoa Time Zone
San Francisco International Airport, location.location.events, 2007 San Francisco International Airport runway incursion
Airport, aviation.waypoint_type.waypoints_of_this_type, San Francisco International Airport
Ted, aviation.airline.focus_cities, San Francisco International Airport
Florida, location.location.time_zones, Central Time Zone
4INFO  Headquarters, location.location.nearby_airports, San Carlos Airport
United States of America, location.location.partiallycontains, m.0wg940n
American Samoa, freebase.valuenotation.is_reviewed, Time zone(s)
2007 San Francisco International Airport runway incursion, common.topic.notable_for, g.1259t_mlg
Americas, location.location.time_zones, Central Time Zone
San Francisco International Airport, aviation.airport.focus_city_for, United p.s.
Cowlitz County, location.location.time_zones, Pacific Time Zone
North America, freebase.valuenotation.is_reviewed, Time zone(s)
High Anxiety, film.film.featured_film_locations, San Francisco
San Francisco International Airport, common.topic.notable_types, Airport
Iowa, location.location.time_zones, Central Time Zone
m.025b87q, aviation.airline_airport_presence.airline, United Airlines
North America, location.location.time_zones, Hawaii-Aleutian Time Zone
San Francisco, film.film_location.featured_in_films, High Anxiety
Nebraska, location.location.time_zones, Mountain Time Zone
United States of America, freebase.valuenotation.is_reviewed, Time zone(s)
m.01xptnq, aviation.airport_runway.airport, San Francisco International Airport
Funny People, film.film.featured_film_locations, San Francisco International Airport
m.043wpm7, military.casualties.combatant, United States of America
Residence Inn San Francisco Airport/Oyster Point Waterfront, common.topic.article, m.0n28tmk
m.01xptnq, aviation.airport_runway.surface, Asphalt
Courtyard San Francisco Airport, travel.hotel.operated_by, Marriott International
International Terminal of San Francisco International Airport2, common.image.size, m.04s5w9g
Americas, location.location.time_zones, Eastern Time Zone
Airport, freebase.type_profile.strict_included_types, Location
Best Western Premier Ivy Hotel Napa Valley, location.location.time_zones, Pacific Time Zone
Ohio, location.location.time_zones, Eastern Time Zone
United States of America, location.location.partiallycontains, m.012m7x7z
United Express, aviation.airline.hubs, San Francisco International Airport
Canada, location.location.time_zones, Central Time Zone
United States of America, location.location.time_zones, Pacific Time Zone
San Francisco International Airport, aviation.airport.hub_for, Virgin America
m.0w_sn90, location.mailing_address.citytown, San Francisco
Virgin America, aviation.airline.focus_cities, San Francisco International Airport
North America, location.location.time_zones, Eastern Time Zone
m.0mypwnp, common.webpage.topic, Renaissance San Francisco Stanford Court Hotel
m.04fnprn, travel.transportation.transport_terminus, Oakland International Airport
m.04hwqy0, common.topic.notable_types, Location
Wake Island, freebase.valuenotation.is_reviewed, Time zone(s)
Asiana Airlines Flight 214, aviation.airliner_accident.accident_site, San Francisco International Airport
Wyoming, location.location.time_zones, Mountain Time Zone
19012, location.location.containedby, United States of America
Oakland International Airport, aviation.airport.serves, Hyatt Regency San Francisco Airport
Los Angeles International Airport, aviation.airport.focus_city_for, Virgin America
m.0w4bgsz, aviation.aviation_incident_aircraft_relationship.flight_destination, San Francisco International Airport
Renaissance San Francisco Stanford Court Hotel, travel.hotel.restaurants_in_hotel, Aurea
San Francisco International Airport, aviation.airport.serves, San Francisco
San Francisco International Airport, aviation.airport.serves, San Mateo County
San Francisco, location.location.nearby_airports, San Francisco International Airport
Ted, aviation.airline.focus_cities, Los Angeles International Airport
New Hampshire, location.location.time_zones, Eastern Time Zone
San Francisco, travel.travel_destination.how_to_get_here, m.04fnprn
2007 San Francisco International Airport runway incursion, base.newsevents.news_reported_event.news_report_s, m.07w1_k9
Palmyra Atoll, freebase.valuenotation.is_reviewed, Time zone(s)
Virgin America, aviation.airline.focus_cities, Los Angeles International Airport
Renaissance San Francisco Stanford Court Hotel, common.topic.webpage, m.0mypwnp
United States of America, location.location.time_zones, Central Time Zone
Washington, D.C., location.location.time_zones, Eastern Time Zone
Renaissance San Francisco Stanford Court Hotel, symbols.namesake.named_after, Leland Stanford
San Francisco International Airport, aviation.airport.runway_information, m.01xptng
San Diego International Airport, aviation.airport.focus_city_for, Virgin America
m.025b87q, aviation.airline_airport_presence.airport, San Francisco International Airport
United States of America, location.location.adjoin_s, m.02wtp91
South Dakota, location.location.time_zones, Mountain Time Zone
Courtyard San Antonio Medical Center, location.location.nearby_airports, San Francisco International Airport
Kansas, location.location.time_zones, Central Time Zone
m.02wj9bp, location.adjoining_relationship.adjoins, United States of America
Leland Stanford, symbols.name_source.namesakes, Renaissance San Francisco Stanford Court Hotel
North America, location.location.time_zones, Pacific Time Zone
San Francisco International Airport, aviation.airport.hub_for, United Express
Renaissance San Francisco Stanford Court Hotel, location.location.nearby_airports, San Francisco International Airport
San Francisco International Airport, aviation.airport.serves, Courtyard San Antonio Medical Center
San Francisco, location.administrative_division.second_level_division_of, United States of America
Idaho, location.location.time_zones, Mountain Time Zone
California, location.location.containedby, United States of America
San Francisco, film.film_location.featured_in_films, Magnum Force
Seattle–Tacoma International Airport, location.location.containedby, United States of America
Washington, location.location.time_zones, Pacific Time Zone
SkyWest Airlines, aviation.airline.hubs, San Francisco International Airport
Pan American World Airways, aviation.airline.focus_cities, San Francisco International Airport
United States of America, location.location.adjoin_s, m.02wtp98
San Diego International Airport, location.location.containedby, United States of America
San Francisco, freebase.valuenotation.is_reviewed, Time zone(s)
Residence Inn San Francisco Airport/Oyster Point Waterfront, travel.hotel.operating_brand, Residence Inn by Marriott
Arizona, location.location.time_zones, Mountain Time Zone
Courtyard San Francisco Larkspur Landing/Marin County, travel.hotel.operated_by, Marriott International
San Francisco International Airport, aviation.airport.serves, Residence Inn San Francisco Airport/Oyster Point Waterfront

Answer: Pacific Time Zone