Millhaven, Ontario
E949582
Millhaven, Ontario is a small community in Eastern Ontario best known for hosting the Millhaven Institution, a federal maximum-security prison.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Millhaven, Ontario canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T11767304 — 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: Millhaven, Ontario Context triple: [Township of Loyalist, contains, Millhaven, Ontario]
-
A.
Saugeen Shores, Ontario
Saugeen Shores, Ontario is a lakeside town on the shores of Lake Huron known for its beaches, tourism, and small-town community in Bruce County.
-
B.
Mount Hope, Ontario
Mount Hope, Ontario is a small community in Hamilton, Ontario, Canada, best known for its regional airport and proximity to the city’s southern rural area.
-
C.
Beachville, Ontario
Beachville, Ontario is a small rural community in Oxford County known historically for its limestone quarries and early baseball heritage.
-
D.
Mississippi Mills, Ontario
Mississippi Mills, Ontario is a small town in eastern Ontario known for its historic mill heritage, scenic riverside setting, and vibrant arts and cultural community.
-
E.
Rockport, Ontario
Rockport, Ontario is a small waterfront village in Eastern Ontario known as a popular gateway and cruise departure point for exploring the Thousand Islands region of the St. Lawrence River.
- 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: Millhaven, Ontario Target entity description: Millhaven, Ontario is a small community in Eastern Ontario best known for hosting the Millhaven Institution, a federal maximum-security prison.
-
A.
Saugeen Shores, Ontario
Saugeen Shores, Ontario is a lakeside town on the shores of Lake Huron known for its beaches, tourism, and small-town community in Bruce County.
-
B.
Mount Hope, Ontario
Mount Hope, Ontario is a small community in Hamilton, Ontario, Canada, best known for its regional airport and proximity to the city’s southern rural area.
-
C.
Beachville, Ontario
Beachville, Ontario is a small rural community in Oxford County known historically for its limestone quarries and early baseball heritage.
-
D.
Mississippi Mills, Ontario
Mississippi Mills, Ontario is a small town in eastern Ontario known for its historic mill heritage, scenic riverside setting, and vibrant arts and cultural community.
-
E.
Rockport, Ontario
Rockport, Ontario is a small waterfront village in Eastern Ontario known as a popular gateway and cruise departure point for exploring the Thousand Islands region of the St. Lawrence River.
- F. None of above. chosen
Statements (26)
| Predicate | Object |
|---|---|
| instanceOf |
federal prison
ⓘ
maximum-security prison ⓘ unincorporated community ⓘ |
| country |
Canada
ⓘ
Canada ⓘ |
| designedCapacity | approximately 400 inmates ⓘ |
| governingBody | Township of Loyalist ⓘ |
| hasFacilityType | intake assessment unit for Ontario region ⓘ |
| hasInmateGender | male ⓘ |
| hasPostalCodePrefix | K0H ⓘ |
| knownFor | Millhaven Institution ⓘ |
| locatedIn |
Eastern Ontario
ⓘ
Millhaven, Ontario ⓘ Ontario ⓘ |
| locatedInAdministrativeEntity |
Lennox and Addington County
ⓘ
Loyalist, Ontario ⓘ |
| locatedNear |
Bath, Ontario
ⓘ
Kingston, Ontario ⓘ Lake Ontario ⓘ |
| locatedWestOf | Kingston, Ontario ⓘ |
| observesDaylightSavingTime | yes ⓘ |
| opened | 1971 ⓘ |
| operatedBy | Correctional Service of Canada ⓘ |
| replaced |
Kingston Penitentiary (in part)
ⓘ
linked to:
Kingston Penitentiary
|
| securityClassification | maximum ⓘ |
| timeZone | Eastern Time Zone ⓘ |
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: Millhaven, Ontario Description of subject: Millhaven, Ontario is a small community in Eastern Ontario best known for hosting the Millhaven Institution, a federal maximum-security prison.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.