Century 21 Exposition
E33051
Century 21 Exposition was the 1962 Seattle World’s Fair, a major international event themed around the future that left lasting landmarks such as the Space Needle.
All labels observed (9)
How this entity was disambiguated
This entity first appeared as the object of triple T255072 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Century 21 Exposition Context triple: [Space Needle, builtFor, Century 21 Exposition]
-
A.
Louisiana Purchase Exposition
The Louisiana Purchase Exposition, also known as the 1904 St. Louis World's Fair, was a major international exposition held to celebrate the centennial of the Louisiana Purchase and showcase technological, cultural, and artistic achievements of the era.
-
B.
Panama–Pacific International Exposition
The Panama–Pacific International Exposition was a major world's fair held in San Francisco in 1915 to celebrate the opening of the Panama Canal and showcase the city's recovery from the 1906 earthquake.
-
C.
World’s Columbian Exposition
The World’s Columbian Exposition was the grand 1893 Chicago world’s fair that showcased neoclassical architecture, technological innovation, and urban planning ideals that helped shape modern American cities.
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D.
World's Fair Park
World's Fair Park is a public park and event space in downtown Knoxville, Tennessee, built on the former site of the 1982 World's Fair and known for its iconic Sunsphere observation tower.
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E.
Exposition Park
Exposition Park was a historic early 20th-century baseball stadium in Pittsburgh that hosted the Pittsburgh Pirates and the first modern World Series games.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Century 21 Exposition Target entity description: Century 21 Exposition was the 1962 Seattle World’s Fair, a major international event themed around the future that left lasting landmarks such as the Space Needle.
-
A.
Louisiana Purchase Exposition
The Louisiana Purchase Exposition, also known as the 1904 St. Louis World's Fair, was a major international exposition held to celebrate the centennial of the Louisiana Purchase and showcase technological, cultural, and artistic achievements of the era.
-
B.
Panama–Pacific International Exposition
The Panama–Pacific International Exposition was a major world's fair held in San Francisco in 1915 to celebrate the opening of the Panama Canal and showcase the city's recovery from the 1906 earthquake.
-
C.
World’s Columbian Exposition
The World’s Columbian Exposition was the grand 1893 Chicago world’s fair that showcased neoclassical architecture, technological innovation, and urban planning ideals that helped shape modern American cities.
-
D.
World's Fair Park
World's Fair Park is a public park and event space in downtown Knoxville, Tennessee, built on the former site of the 1982 World's Fair and known for its iconic Sunsphere observation tower.
-
E.
Exposition Park
Exposition Park was a historic early 20th-century baseball stadium in Pittsburgh that hosted the Pittsburgh Pirates and the first modern World Series games.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
international exposition
ⓘ
world's fair ⓘ |
| attendance | approximately 10 million visitors ⓘ |
| category |
1962 in Washington (state)
ⓘ
History of Seattle ⓘ World's fairs in the United States ⓘ |
| cityHosted | Seattle ⓘ |
| closingDate | 1962-10-21 ⓘ |
| continent | North America ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| followedBy | Expo 67 ⓘ |
| genre | exposition on science and the future ⓘ |
| hasLegacy | creation of Seattle Center as a civic and cultural hub ⓘ |
| hasPavilion |
International Commerce and Industry Pavilion
ⓘ
Soviet Pavilion ⓘ United States Science Pavilion ⓘ Seattle Center Coliseum ⓘ
surface form:
Washington State Coliseum
|
| leftLandmark |
International Fountain
ⓘ
KeyArena site ⓘ Pacific Science Center ⓘ Seattle Center Monorail ⓘ Space Needle ⓘ |
| locatedIn | Seattle ⓘ |
| locatedInAdministrativeEntity |
Washington
ⓘ
surface form:
Washington (state)
|
| mainAttraction |
Alweg Monorail
ⓘ
Bubbleator ride ⓘ Science exhibits ⓘ Space Needle ⓘ
surface form:
Space Needle observation tower
|
| motto |
The Age of Space
ⓘ
surface form:
Living in the Space Age
|
| notableStructureBuiltFor |
Seattle Center Monorail
ⓘ
Space Needle ⓘ United States Science Pavilion ⓘ |
| officialName | Century 21 Exposition self-link ⓘ |
| openingDate | 1962-04-21 ⓘ |
| organizingBody |
Seattle, Washington, United States
ⓘ
surface form:
City of Seattle
|
| precededBy | Expo 58 ⓘ |
| purpose |
promote Seattle's economic and cultural development
ⓘ
showcase advances in science and technology ⓘ |
| recognizedBy | Bureau International des Expositions ⓘ |
| shortName |
Century 21 Exposition
self-linksurface differs
ⓘ
surface form:
Seattle World's Fair
|
| slogan |
Century 21 Exposition
self-linksurface differs
ⓘ
surface form:
Century 21 Exposition: America's Space Age World's Fair
|
| subjectOf | urban redevelopment of Seattle Center ⓘ |
| theme |
The Age of Space
ⓘ
the future ⓘ |
| venue | Seattle Center ⓘ |
| year | 1962 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Century 21 Exposition Description of subject: Century 21 Exposition was the 1962 Seattle World’s Fair, a major international event themed around the future that left lasting landmarks such as the Space Needle.
Referenced by (33)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Century 21 Exposition, Inc.
this entity surface form:
Seattle World's Fair
this entity surface form:
Century 21 Exposition: America's Space Age World's Fair
this entity surface form:
Century 21 Exposition (1962 Seattle World’s Fair)
subject surface form:
Soviet Pavilion (Century 21 Exposition)
subject surface form:
Soviet Pavilion (Century 21 Exposition)
this entity surface form:
Century 21 Exposition national pavilions
subject surface form:
Soviet Pavilion (Century 21 Exposition)
this entity surface form:
Century 21 Exposition thematic program
this entity surface form:
Century 21 Exposition international exhibits
this entity surface form:
Seattle World's Fair
this entity surface form:
Century 21 Exposition grounds
this entity surface form:
Seattle World's Fair
this entity surface form:
Century 21 Exposition grounds