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 popular attraction was established in San Diego in the year 1913? 
Knowledge Triplets: Allied Gardens, San Diego, location.location.containedby, San Diego
San Diego, travel.travel_destination.tourist_attractions, Timken Museum of Art
Aquatica San Diego, location.location.containedby, San Diego
SeaWorld San Diego, amusement_parks.park.rides, SkyTower
Aquatica San Diego, organization.organization.acquired_by, m.010b2xxt
m.0h_5fvc, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
San Diego, common.topic.webpage, m.0b47hvj
Old Town San Diego State Historic Park, base.usnris.nris_listing.significance_level, State
Point Loma, San Diego, common.topic.notable_for, g.1256dx7b9
m.03ljxgq, common.webpage.topic, SeaWorld San Diego
SeaWorld San Diego, common.topic.webpage, m.062v5yl
San Diego Toreros, common.topic.image, san diego.gif
San Diego Zoo, zoos.zoo.exhibits, Discovery Outpost Crocodile and Turtle Exhibit
San Diego, common.topic.webpage, m.09yh8cc
Hotel Palomar San Diego, a Kimpton Hotel, common.topic.subject_of, Hotel
m.09yhrjz, common.webpage.topic, San Diego
SeaWorld San Diego, common.topic.webpage, m.03ljxgq
San Diego, common.topic.webpage, m.09x43lf
m.09yhcvs, common.webpage.topic, San Diego
Allied Gardens, San Diego, location.location.containedby, San Diego County
92110, location.location.contains, Bay Park, San Diego
San Diego Zoo, zoos.zoo.exhibits, Discovery Outpost Hummingbird House
San Diego, common.topic.webpage, m.0b483s8
San Diego–Tijuana, common.topic.image, SD-TJ Montage
m.09x10xq, common.webpage.topic, San Diego
San Diego Marriott Hotel and Marina South Tower, location.location.containedby, San Diego
SeaWorld San Diego, location.location.containedby, San Diego
m.0h_5g20, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
Hotel Solamar San Diego, a Kimpton Hotel, common.topic.subject_of, Hotel
U-T San Diego, common.topic.webpage, m.0hzvw48
San Diego Zoo, common.topic.notable_types, Zoo
Park Hyatt Resort Aviara, location.location.containedby, San Diego County
Allied Gardens, San Diego, location.location.containedby, California
USS Midway, travel.tourist_attraction.near_travel_destination, San Diego
Imperial Bank Tower, location.location.containedby, San Diego
San Diego Zoo, zoos.zoo.exhibits, Polar Rim Reindeer Exhibit
San Diego CityBeat, common.topic.notable_for, g.1259rkjvg
SeaWorld San Diego, location.location.containedby, California
The San Diego skyline on March 31, 2007., common.image.appears_in_topic_gallery, San Diego
Point Loma, San Diego, common.topic.article, m.05s5k2
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5ft9
U-T San Diego, common.topic.notable_for, g.125f3f1kq
San Diego Zoo Safari Park, common.topic.notable_for, g.125bn8k3y
San Diego–Tijuana, common.topic.image, Map of the San Diego-Tijuana
San Diego Zoo, zoos.zoo.memberships, Association of Zoos and Aquariums
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5ftp
San Diego, common.topic.webpage, m.09y0q_m
San Diego Zoo Safari Park, location.location.containedby, California
San Diego Zoo, common.topic.webpage, m.0k3flxg
Wells Fargo Plaza, location.location.containedby, San Diego
san diego.gif, common.image.appears_in_topic_gallery, San Diego Toreros
Omni San Diego Hotel, location.location.containedby, San Diego
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5frl
m.0h_5fsm, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
Andrew W. Garcia, common.topic.subjects, San Diego
m.0h_5fdz, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
m.09x49kb, common.webpage.topic, San Diego
La Jolla Cove, travel.tourist_attraction.near_travel_destination, San Diego
Bay Park, San Diego, location.location.containedby, California
SeaWorld San Diego, amusement_parks.park.rides, Elmo's Flying Fish
San Diego, common.topic.subject_of, Hotel Palomar San Diego, a Kimpton Hotel
San Diego, common.topic.webpage, m.09xzpk4
San Diego Zoo Safari Park, zoos.zoo.exhibits, Afican Woods
San Diego, common.topic.webpage, m.09wg7q3
San Pasqual Valley, location.location.contains, San Diego Zoo Safari Park
SeaWorld San Diego, amusement_parks.park.rides, Bayside Skyride
Mission San Diego de Alcalá, common.topic.notable_types, Building
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Gorilla Exhibit
Omni San Diego Hotel, common.topic.notable_types, Accommodation
Rock 'n' Roll San Diego Marathon, common.topic.webpage, m.0gx6xyr
Old Point Loma Lighthouse, travel.tourist_attraction.near_travel_destination, San Diego
San Diego Zoo Safari Park, location.location.containedby, Escondido
San Diego Zoo Safari Park, common.topic.notable_types, Zoo
San Diego Zoo, common.topic.article, m.01v05p
San Diego Zoo, zoos.zoo.exhibits, Outback Koala Exhibit
San Diego, travel.travel_destination.tourist_attractions, Cabrillo National Monument
San Ysidro McDonald's massacre, time.event.locations, San Diego
Aquatica San Diego, location.location.geolocation, m.010bbf12
Anametrix, organization.organization.place_founded, San Diego
m.03lhgdm, common.webpage.topic, San Diego Reader
San Diego, common.topic.webpage, m.03lc9j_
Park Hyatt Resort Aviara, location.location.nearby_airports, San Diego International Airport
South Park, location.location.containedby, San Diego
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5g2q
Bay Park, San Diego, location.location.containedby, San Diego County
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5fdz
Kearny Mesa, San Diego, common.topic.notable_for, g.125b2p9hn
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Scripps Aviary
San Diego Zoo Safari Park, common.topic.webpage, m.0gw20lm
m.09yf5km, common.webpage.topic, San Diego
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Tapir Exhibit
Point Loma, San Diego, common.topic.notable_types, Neighborhood
m.05nncd8, common.webpage.topic, San Diego Zoo
San Diego CityBeat, common.topic.article, m.03h4tth
San Diego, common.topic.webpage, m.0b48v9_
SeaWorld San Diego, common.topic.article, m.0c8ck0
San Diego, travel.travel_destination.tourist_attractions, SeaWorld San Diego
Cabrillo National Monument, travel.tourist_attraction.near_travel_destination, San Diego
San Diego, common.topic.webpage, m.09xsgx0
m.0h3_zpf, common.webpage.topic, San Diego Zoo Safari Park
m.0k3g7fv, common.webpage.topic, San Diego Zoo Safari Park
92101, location.location.contains, Maritime Museum of San Diego
SeaWorld San Diego, amusement_parks.park.rides, Abby's Sea Star Spin
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5g20
One America Plaza, location.location.containedby, San Diego County
San Diego, travel.travel_destination.tourist_attractions, Hotel del Coronado
U-T San Diego, common.topic.article, m.03_f0q
Wild Arctic, amusement_parks.ride.park, SeaWorld San Diego
Maritime Museum of San Diego, common.topic.notable_types, Museum
Coronado, travel.travel_destination.tourist_attractions, Point Loma, San Diego
San Diego Zoo, zoos.zoo.exhibits, Africa Rocks Kopje Exhibit
Aquatica San Diego, location.location.containedby, California
Hotel Palomar San Diego, a Kimpton Hotel, common.topic.subjects, San Diego
m.03lg557, common.webpage.topic, San Diego Zoo Safari Park
San Diego, common.topic.webpage, m.052m_4f
m.062v5yl, common.webpage.topic, SeaWorld San Diego
Old Town, San Diego, common.topic.notable_for, g.1ynl2qjjc
m.03ldg3h, common.webpage.topic, San Diego Zoo
San Diego, travel.travel_destination.tourist_attractions, Old Town San Diego State Historic Park
San Diego, common.topic.subject_of, Hotel La Jolla, a Kimpton Hotel
San Diego, common.topic.webpage, m.09yf5km
San Diego Aviators, common.topic.notable_for, g.11b60z0fr7
San Diego Zoo, zoos.zoo.exhibits, Discovery Outpost Reptile House
San Diego Zoo Safari Park, location.location.geolocation, m.0wmd_4m
San Diego Zoo, zoos.zoo.exhibits, Elephant Odyssey
Jenny Craig Pavilion, location.location.containedby, San Diego
San Diego Zoo, base.schemastaging.context_name.pronunciation, m.01314fst
Skyline of San Diego, California, common.image.size, m.02dtnqw
Maritime Museum of San Diego, location.location.containedby, 92101
m.09ywr0r, common.webpage.topic, San Diego
Point Loma, San Diego, common.topic.image, Pointloma2
The San Diego Door, common.topic.notable_for, g.1254zc4z4
SeaWorld San Diego, location.location.geolocation, m.010q4gsp
m.09xhylb, common.webpage.topic, San Diego
SeaWorld San Diego, common.topic.notable_for, g.125g10xp5
San Diego, travel.travel_destination.tourist_attractions, Mission San Diego de Alcalá
Omni San Diego Hotel, location.location.containedby, East Village
m.09x63n2, common.webpage.topic, San Diego
San Diego Reader, common.topic.notable_for, g.125bspxvp
San Diego Zoo Safari Park, zoos.zoo.exhibits, Elephant Valley
San Diego Zoo Safari Park, location.location.containedby, San Pasqual Valley
Aquatica San Diego, travel.tourist_attraction.near_travel_destination, San Diego
San Diego, common.topic.webpage, m.09xrv2d
Point Loma, San Diego, common.topic.image, Point Loma air photo
m.09yh8cc, common.webpage.topic, San Diego
San Diego Zoo Safari Park, travel.tourist_attraction.near_travel_destination, San Diego
Aquatica San Diego, common.topic.notable_for, g.11b5l_z8gx
Mission San Diego de Alcalá, travel.tourist_attraction.near_travel_destination, San Diego
San Diego, travel.travel_destination.tourist_attractions, Rock 'n' Roll San Diego Marathon
SeaWorld San Diego, amusement_parks.park.rides, Wild Arctic
Skyline of San Diego, California, common.image.appears_in_topic_gallery, San Diego
San Diego Marriott Hotel and Marina South Tower, location.location.containedby, United States of America
SeaWorld San Diego, common.topic.image, Journey to Atlantis attraction.
San Diego Zoo, common.topic.webpage, m.05nncd8
Old Town San Diego State Historic Park, location.location.geolocation, m.0clcpp6
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5fvq
Aquatica San Diego, location.location.containedby, Chula Vista
San Diego–Tijuana, common.topic.notable_for, g.1258gz0qz
Aquatica San Diego, business.asset.owners, m.0109583x
San Diego, common.topic.webpage, m.09xhjrs
SeaWorld San Diego, location.location.time_zones, Pacific Time Zone
Hilton San Diego Bayfront, location.location.containedby, San Diego
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5fs8
m.0gw20lm, common.webpage.topic, San Diego Zoo Safari Park
m.09yghyq, common.webpage.topic, San Diego
Bay Park, San Diego, location.location.containedby, United States of America
SeaWorld San Diego, film.film_location.featured_in_films, Blackfish
San Diego Zoo, common.topic.webpage, m.03ldg3h
San Diego, common.topic.webpage, m.09yhfq0
SeaWorld San Diego, travel.tourist_attraction.near_travel_destination, San Diego
Viejas Arena, location.location.containedby, San Diego
Old Town San Diego State Historic Park, protected_sites.protected_site.governing_body, California Department of Parks and Recreation
San Diego Zoo Safari Park, zoos.zoo.exhibits, Tiger Territory
SeaWorld San Diego, location.location.containedby, United States of America
m.0b496yr, common.webpage.topic, San Diego
San Diego, common.topic.webpage, m.09x49kb
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5fvc
Old Town San Diego State Historic Park, common.topic.article, m.04c6gp
Sapphire Tower, location.location.containedby, San Diego
San Diego Zoo Safari Park, zoos.zoo.exhibits, African Plains
San Diego, common.topic.subject_of, Andrew W. Garcia
m.0h_5fv0, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
m.09xsgx0, common.webpage.topic, San Diego
San Diego, common.topic.notable_for, g.125bwrlpg
U-T San Diego, common.topic.webpage, m.03kwgtz
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5fry
m.09yhr59, common.webpage.topic, San Diego
San Diego Zoo, zoos.zoo.memberships, American Alliance of Museums
San Diego, travel.travel_destination.tourist_attractions, Children's Pool Beach
San Diego Zoo Safari Park, zoos.zoo.exhibits, Lion Camp
San Diego, common.topic.webpage, m.09ycnn9
San Diego, common.topic.webpage, m.0b466y3
m.03kwgtz, common.webpage.topic, U-T San Diego
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5fsz
Balboa Park, location.location.containedby, San Diego
SeaWorld San Diego, amusement_parks.park.rides, Riptide Rescue
San Diego, travel.travel_destination.tourist_attractions, Aquatica San Diego
San Diego Zoo, zoos.zoo.exhibits, Discovery Outpost Giant Tortoise Exhibit
m.0h_5g2q, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
San Diego Zoo, zoos.zoo.exhibits, Asian Passage Sun Bear Exhibit
San Diego Zoo Safari Park, location.location.containedby, United States of America
The San Diego Door, common.topic.article, m.0cw829
Old Town San Diego State Historic Park, location.location.containedby, California
m.0h_5ft9, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
SeaWorld San Diego, common.topic.image, Seaworld 2006
m.03lc9j_, common.webpage.topic, San Diego
Pinnacle Marina Tower, location.location.containedby, San Diego
Valley View Casino Center, location.location.containedby, San Diego
San Diego Zoo, zoos.zoo.exhibits, Africa Rocks Meerkat Exhibit
San Diego Zoo Safari Park, zoos.zoo.exhibits, Condor Ridge
First Allied Plaza, location.location.containedby, San Diego County
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Tiger Exhibit
Maritime Museum of San Diego, location.location.containedby, San Diego County
m.09xrv2d, common.webpage.topic, San Diego
San Diego, common.topic.webpage, m.09wycsc
San Diego Zoo Safari Park, zoos.zoo.exhibits, Asian Savanna
San Diego Zoo, zoos.zoo.exhibits, Outback Wallaby Exhibit
San Diego, common.topic.webpage, m.0b4619z
The San Diego Door, book.newspaper.headquarters, m.0j0y11y
San Diego Marriott Hotel and Marina North Tower, location.location.containedby, San Diego
Rock 'n' Roll San Diego Marathon, travel.tourist_attraction.near_travel_destination, San Diego
San Diego Zoo, zoos.zoo.exhibits, Urban Jungle Giraffe Exhibit
Escondido, location.location.contains, San Diego Zoo Safari Park
San Diego, common.topic.webpage, m.09yhrjz
Belmont Park, travel.tourist_attraction.near_travel_destination, San Diego
SeaWorld San Diego, organization.organization.phone_number, m.010q2dw9
m.0h_5fsz, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
Old Town San Diego State Historic Park, common.topic.notable_for, g.125b7l86f
San Diego Mariners, common.topic.notable_for, g.1255dk36y
m.09wn1g2, common.webpage.topic, San Diego
Children's Pool Beach, travel.tourist_attraction.near_travel_destination, San Diego
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Flamingo Exhibit
SeaWorld San Diego, common.topic.notable_types, Amusement Park
San Diego Zoo Safari Park, zoos.zoo.exhibits, African Outpost
Hotel del Coronado, travel.tourist_attraction.near_travel_destination, San Diego
Bay Park, San Diego, location.location.containedby, 92110
m.0b47hvj, common.webpage.topic, San Diego
Balboa Park, location.location.contains, San Diego Zoo
San Diego Zoo, zoos.zoo.exhibits, Discovery Outpost Children's Zoo
Bay Park, San Diego, common.topic.notable_types, Location
SD Montage, common.image.appears_in_topic_gallery, San Diego
SeaWorld San Diego, organization.organization.email, m.010q2dv7
San Diego Zoo Safari Park, zoos.zoo.memberships, Association of Zoos and Aquariums
North Park, location.location.containedby, San Diego
Aquatica San Diego, business.asset.owners, m.010950h3
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5g2c
SeaWorld San Diego, amusement_parks.park.rides, Manta
San Diego, travel.travel_destination.tourist_attractions, USS Midway
San Diego Zoo, zoos.zoo.exhibits, Outback Camel Exhibit
m.09xzpk4, common.webpage.topic, San Diego
San Diego Zoo, travel.tourist_attraction.near_travel_destination, California
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Owens Aviary
m.09wycsc, common.webpage.topic, San Diego
m.0cvjb5n, common.webpage.topic, 3043 San Diego
Old Town San Diego State Historic Park, common.topic.notable_types, Tourist attraction
San Diego Zoo, zoos.zoo.memberships, World Association of Zoos and Aquariums
m.09x43lf, common.webpage.topic, San Diego
San Diego, common.topic.image, Skyline of San Diego, California
m.0h_5fry, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
Aquatica San Diego, organization.organization.previous_names, m.0109wr8q
San Diego, travel.travel_destination.tourist_attractions, La Jolla Cove
San Diego, common.topic.webpage, m.09yk7zf
m.09wg7q3, common.webpage.topic, San Diego
San Diego, common.topic.webpage, m.09ywr0r
m.09yk7zf, common.webpage.topic, San Diego
San Diego, travel.travel_destination.tourist_attractions, Balboa Park
SeaWorld San Diego, organization.organization.phone_number, m.010q2dxd
m.06_p0wt, protected_sites.natural_or_cultural_site_listing.listed_site, Old Town San Diego State Historic Park
San Diego, common.topic.webpage, m.09xty2d
San Diego Zoo Safari Park, common.topic.article, m.096px
San Diego–Tijuana, common.topic.article, m.02758s3
San Diego, common.topic.webpage, m.09wn1g2
Old Town San Diego State Historic Park, protected_sites.listed_site.designation_as_natural_or_cultural_site, m.06_p0wt
San Diego Zoo, location.location.geolocation, m.02_k5yy
Hilton San Diego Bayfront, common.topic.notable_types, Accommodation
m.0b4619z, common.webpage.topic, San Diego
San Diego, travel.travel_destination.tourist_attractions, San Diego Zoo Safari Park
San Diego Zoo, location.location.containedby, Balboa Park
m.0h_5frl, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
Gaslamp Quarter, common.topic.image, San Diego Gaslamp Quarter entrance
m.09wytx8, common.webpage.topic, San Diego
92101, location.location.contains, San Diego Model Railroad Museum
Aquatica San Diego, organization.organization.email, m.0109_wvf
Old Town San Diego State Historic Park, common.topic.image, Old Town San Diego 010
South Park, common.topic.image, Central portion of San Diego and neighborhood boundaries
San Diego Zoo, zoos.zoo.exhibits, Discovery Outpost Insect House
Hotel Solamar San Diego, a Kimpton Hotel, common.topic.subjects, Hotel
Mission San Diego de Alcalá, common.topic.image, Serra in San Diego May 19 1770
SeaWorld San Diego, organization.organization.parent, m.010q2dsd
Point Loma, San Diego, travel.tourist_attraction.near_travel_destination, Coronado
San Diego, travel.travel_destination.tourist_attractions, Birch Aquarium
Old Town San Diego State Historic Park, travel.tourist_attraction.near_travel_destination, San Diego
m.0h_5g1p, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
Old Town San Diego State Historic Park, common.topic.image, Old Town, San Diego
Hilton San Diego Bayfront, location.location.containedby, United States of America
SeaWorld San Diego, business.asset.owners, m.0x1014w
m.0h_5fvq, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
Allied Gardens, San Diego, common.topic.article, m.0gnf2_
San Diego Zoo, travel.tourist_attraction.near_travel_destination, San Diego
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Birds of Prey Exhibit
San Diego Zoo Safari Park, zoos.zoo.exhibits, Nairobi Fillage
Old Town San Diego State Historic Park, location.location.time_zones, Pacific Time Zone
m.09y3sxx, common.webpage.topic, San Diego
Hotel Solamar San Diego, a Kimpton Hotel, common.topic.subjects, San Diego
m.0h_5ftp, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
San Diego–Tijuana, common.topic.notable_types, Location
m.0k3flxg, common.webpage.topic, San Diego Zoo
San Diego Zoo, zoos.zoo.exhibits, Asian Passage Lion-Tailed Macaque Exhibit
San Diego Zoo Safari Park, zoos.zoo.exhibits, Gorilla Forest
Point Loma, San Diego, common.topic.image, Point loma lighthouse
San Diego Zoo, zoos.zoo.exhibits, Panda Canyon Panda Exhibit
SeaWorld San Diego, location.location.street_address, m.0x0_v1x
SeaWorld San Diego, amusement_parks.park.rides, Oscar's Rocking Eel
San Diego, travel.travel_destination.tourist_attractions, Old Point Loma Lighthouse
San Diego Trolley, common.topic.image, Trolley in Old Town.
Old Town, San Diego, location.location.contains, La Casa de Juan Bandini
m.0b466y3, common.webpage.topic, San Diego
m.0gk8rfq, common.webpage.topic, SeaWorld San Diego
San Diego, common.topic.image, The San Diego skyline on March 31, 2007.
Mission San Diego de Alcalá, common.topic.image, San-diego-mission-chuch
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Australasian Aviary
San Diego, common.topic.webpage, m.09xvxlc
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Bonobo Exhibit
San Diego, common.topic.webpage, m.09xhylb
Birch Aquarium, travel.tourist_attraction.near_travel_destination, San Diego
San Diego Zoo Safari Park, common.topic.webpage, m.0h3_zpf
San Diego Zoo, zoos.zoo.exhibits, Polar Rim Arctic Aviary Exhibit
One America Plaza, location.location.containedby, San Diego
San Diego, common.topic.webpage, m.09y3sxx
San Diego, common.topic.webpage, m.09x63n2
San Diego, travel.travel_destination.tourist_attractions, Cabrillo National Monument
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Otter and Swamp Monkey Exhibit
Hotel Palomar San Diego, a Kimpton Hotel, common.topic.subjects, Hotel
First Allied Plaza, location.location.containedby, San Diego
San Diego, common.topic.webpage, m.09yhcvs
m.09ycnn9, common.webpage.topic, San Diego
Mission San Diego de Alcalá, common.topic.notable_for, g.125b7g2c4
San Diego, common.topic.webpage, m.09yhr59
m.052m_4f, common.webpage.topic, San Diego
Balboa Park, common.topic.image, San Diego Fair 1916 Laguna Flores
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Monkey Exhibit
La Casa de Juan Bandini, location.location.containedby, Old Town, San Diego
California, travel.travel_destination.tourist_attractions, San Diego Zoo
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Parker Aviary
San Diego, common.topic.webpage, m.09x10xq
Hotel La Jolla, a Kimpton Hotel, common.topic.subjects, San Diego
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5fsm
m.09y0q_m, common.webpage.topic, San Diego
Allied Gardens, San Diego, common.topic.notable_types, Neighborhood
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5g1p
Allied Gardens, San Diego, common.topic.image, Eastern San Diego Area Map and neighborhood boundaries
San Diego, common.topic.webpage, m.09yghyq
Timken Museum of Art, travel.tourist_attraction.near_travel_destination, San Diego
San Diego Marriott Hotel and Marina North Tower, location.location.containedby, United States of America
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Hippo Exhibit
m.09xhjrs, common.webpage.topic, San Diego
3043 San Diego, common.topic.article, m.06vg58
Kearny Mesa, San Diego, common.topic.article, m.027_snk
San Diego Zoo, common.topic.image, SDZooSign
U-T San Diego, common.topic.webpage, m.0fpskt4
m.0h_5g2c, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
San Diego Zoo, zoos.zoo.exhibits, Africa Rocks Big Cats Exhibit
m.09xvxlc, common.webpage.topic, San Diego
Allied Gardens, San Diego, location.location.geolocation, m.0wmn4nb
San Diego, common.topic.image, SD Montage
Balboa Park, location.location.containedby, San Diego County
Balboa Park, travel.tourist_attraction.near_travel_destination, San Diego
San Diego Zoo Safari Park, location.location.containedby, San Diego
Little Italy, common.topic.image, The Little Italy Sign, in San Diego
San Diego Zoo Safari Park, common.topic.webpage, m.03lg557
m.09yhfq0, common.webpage.topic, San Diego
San Diego, travel.travel_destination.tourist_attractions, San Diego Zoo
Cabrillo National Monument, common.topic.image, San Diego Skyline from Cabrillo National Monument
Manta, amusement_parks.ride.park, SeaWorld San Diego
San Diego Zoo, zoos.zoo.exhibits, Polar Rim Polar Bear Exhibit
San Diego Zoo Safari Park, common.topic.image, Sign inside the park
SeaWorld San Diego, common.topic.webpage, m.0gk8rfq
Aquatica San Diego, location.location.containedby, United States of America
San Diego, travel.travel_destination.tourist_attractions, Belmont Park
Belmont Park, location.location.containedby, San Diego
San Diego Zoo Safari Park, zoos.zoo.notable_animals, m.0h_5fv0
m.0b483s8, common.webpage.topic, San Diego
San Diego Zoo, location.location.containedby, San Diego
3043 San Diego, common.topic.notable_for, g.1255j61xq
Omni San Diego Hotel, location.location.containedby, United States of America
Rock 'n' Roll San Diego Marathon, common.topic.image, Richard Limo
San Diego, common.topic.webpage, m.0b496yr
Aquatica San Diego, common.topic.notable_types, Amusement Park
San Diego Zoo, zoos.zoo.exhibits, Lost Forest Orangutan and Siamang Exhibit
SeaWorld San Diego, amusement_parks.park.rides, Shipwreck Rapids
San Diego Zoo Safari Park, common.topic.webpage, m.0k3g7fv
Allied Gardens, San Diego, common.topic.notable_for, g.1259_1v_f
San Diego, common.topic.subject_of, Hotel Solamar San Diego, a Kimpton Hotel
Aquatica San Diego, organization.organization.parent, m.0109555x
San Diego, common.topic.article, m.071w1
SeaWorld San Diego, amusement_parks.park.rides, Journey to Atlantis
San Diego Trolley, common.topic.article, m.0585b6
The San Diego Door, common.topic.notable_types, Newspaper
m.0b48v9_, common.webpage.topic, San Diego
Old Town San Diego State Historic Park, location.location.containedby, San Diego
3043 San Diego, common.topic.webpage, m.0cvjb5n
m.09xty2d, common.webpage.topic, San Diego
San Diego Zoo, common.topic.notable_for, g.1257w3w61
Maritime Museum of San Diego, location.location.containedby, San Diego
San Diego, common.topic.webpage, m.09wytx8
m.0h_5fs8, zoos.animal_captivity.zoo, San Diego Zoo Safari Park
The San Diego skyline on March 31, 2007., common.image.size, m.02d3jb0

Answer: Cabrillo National Monument