Dominion Observatory (Ottawa)
E763047
Dominion Observatory in Ottawa is a historic Canadian government astronomical observatory, built in the early 20th century and known for its role in timekeeping, geophysical research, and architectural significance.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Dominion Observatory (Ottawa) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8869592 — 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: Dominion Observatory (Ottawa) Context triple: [David Ewart, notableWork, Dominion Observatory (Ottawa)]
-
A.
Pugwash Peace Hall
Pugwash Peace Hall is a historic building and community venue in Pugwash, Nova Scotia, associated with the village’s long-standing role in international peace and disarmament efforts.
-
B.
Laurier House, Ottawa
Laurier House, Ottawa is a historic residence and National Historic Site that served as the home of two Canadian prime ministers, including William Lyon Mackenzie King.
-
C.
Kenwood Observatory
Kenwood Observatory was a pioneering late-19th-century astronomical facility in Chicago known for early solar research and instrumental innovation.
-
D.
Westmount Park United Church
Westmount Park United Church is a historic Protestant church and community congregation located in the Montreal suburb of Westmount, Quebec.
-
E.
McGill weather observatory
The McGill weather observatory is a meteorological research and monitoring facility at McGill University that supports atmospheric science education and data collection.
- 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: Dominion Observatory (Ottawa) Target entity description: Dominion Observatory in Ottawa is a historic Canadian government astronomical observatory, built in the early 20th century and known for its role in timekeeping, geophysical research, and architectural significance.
-
A.
Pugwash Peace Hall
Pugwash Peace Hall is a historic building and community venue in Pugwash, Nova Scotia, associated with the village’s long-standing role in international peace and disarmament efforts.
-
B.
Laurier House, Ottawa
Laurier House, Ottawa is a historic residence and National Historic Site that served as the home of two Canadian prime ministers, including William Lyon Mackenzie King.
-
C.
Kenwood Observatory
Kenwood Observatory was a pioneering late-19th-century astronomical facility in Chicago known for early solar research and instrumental innovation.
-
D.
Westmount Park United Church
Westmount Park United Church is a historic Protestant church and community congregation located in the Montreal suburb of Westmount, Quebec.
-
E.
McGill weather observatory
The McGill weather observatory is a meteorological research and monitoring facility at McGill University that supports atmospheric science education and data collection.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical observatory
ⓘ
government building ⓘ heritage building ⓘ |
| architecturalSignificance | prominent stone masonry and dome ⓘ |
| architecturalStyle |
Neo-Romanesque
ⓘ
surface form:
Romanesque Revival
|
| category |
Buildings and structures in Ottawa
ⓘ
Federal heritage buildings in Ottawa ⓘ Observatories in Canada ⓘ |
| constructionStart | 1902 ⓘ |
| coordinateLocation | 45.395°N 75.706°W ⓘ |
| country | Canada ⓘ |
| formerUse | national observatory of Canada ⓘ |
| hasClock | yes ⓘ |
| hasDome | yes ⓘ |
| hasHeritagePlaque | yes ⓘ |
| hasPhotograph |
historic exterior view
ⓘ
interior telescope room ⓘ |
| hasTelescope | yes ⓘ |
| heritageDesignation | Federal Heritage Building NERFINISHED ⓘ |
| heritageDesignationDate | 1990s ⓘ |
| inception | 1902 ⓘ |
| locatedIn |
Central Experimental Farm
NERFINISHED
ⓘ
Dominion Observatory campus NERFINISHED ⓘ Ontario ⓘ Ottawa ⓘ |
| locatedOn | Observatory Crescent NERFINISHED ⓘ |
| materialUsed | Nepean sandstone NERFINISHED ⓘ |
| namedAfter | Dominion of Canada NERFINISHED ⓘ |
| nearby |
Canada Agriculture and Food Museum
NERFINISHED
ⓘ
Central Experimental Farm Arboretum NERFINISHED ⓘ |
| numberOfStoreys | 2 ⓘ |
| operatedBy |
Department of the Interior (historical)
NERFINISHED
ⓘ
Dominion Observatory (federal agency) NERFINISHED ⓘ |
| ownedBy | Government of Canada NERFINISHED ⓘ |
| partOf | Natural Resources Canada complex ⓘ |
| primaryFunction |
astronomical observation
ⓘ
geophysical research ⓘ timekeeping ⓘ |
| roofFeature | rotating dome ⓘ |
| significantPeriod | early 20th century ⓘ |
| status | historic building ⓘ |
| usedFor |
astronomical time signals
ⓘ
calibration of timepieces ⓘ geodesy ⓘ longitude determination ⓘ seismology ⓘ standard time determination in Canada ⓘ |
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: Dominion Observatory (Ottawa) Description of subject: Dominion Observatory in Ottawa is a historic Canadian government astronomical observatory, built in the early 20th century and known for its role in timekeeping, geophysical research, and architectural significance.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.