Douglas
E245394
Douglas is a narrow-gauge steam locomotive that operates on the historic Talyllyn Railway in Wales.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Douglas canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2219262 — 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: Douglas Context triple: [Talyllyn Railway, hasLocomotive, Douglas]
-
A.
Douglas
Douglas is a small lakeside city in Allegan County, Michigan, known for its arts community and proximity to Lake Michigan beaches.
-
B.
Douglas
Douglas is a small community located on Douglas Island across from downtown Juneau in southeastern Alaska.
-
C.
Douglas
Douglas is a masculine given name of Scottish origin that has been widely used in English-speaking countries.
-
D.
Douglas
Douglas is the capital and largest town of the Isle of Man, serving as its main commercial center and principal ferry port.
-
E.
Davidson
Davidson is a small town in North Carolina known primarily as the home of Davidson College and its close-knit, college-centered community.
- 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: Douglas Target entity description: Douglas is a narrow-gauge steam locomotive that operates on the historic Talyllyn Railway in Wales.
-
A.
Douglas
Douglas is a masculine given name of Scottish origin that has been widely used in English-speaking countries.
-
B.
Douglas
Douglas is the capital and largest town of the Isle of Man, serving as its main commercial center and principal ferry port.
-
C.
Douglas
Douglas is a small lakeside city in Allegan County, Michigan, known for its arts community and proximity to Lake Michigan beaches.
-
D.
Douglas
Douglas is a small community located on Douglas Island across from downtown Juneau in southeastern Alaska.
-
E.
Davidson
Davidson is a small town in North Carolina known primarily as the home of Davidson College and its close-knit, college-centered community.
- F. None of above. chosen
Statements (20)
| Predicate | Object |
|---|---|
| instanceOf |
Talyllyn Railway locomotive
ⓘ
narrow-gauge locomotive ⓘ steam locomotive ⓘ |
| country | United Kingdom ⓘ |
| gauge | narrow gauge ⓘ |
| hasOperator |
Talyllyn Railway Company
ⓘ
linked to:
Talyllyn Railway
|
| heritageStatus | preserved locomotive ⓘ |
| historicLine | Talyllyn Railway ⓘ |
| locatedIn | Wales ⓘ |
| operatesOn | Talyllyn Railway ⓘ |
| operationalStatus | in service on Talyllyn Railway ⓘ |
| powerType | steam ⓘ |
| propulsion | steam engine ⓘ |
| railwayType | heritage railway ⓘ |
| region | Mid Wales ⓘ |
| trackGaugeType | narrow gauge railway ⓘ |
| traction | steam ⓘ |
| usedFor |
heritage railway operations
ⓘ
passenger services ⓘ tourist services ⓘ |
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: Douglas Description of subject: Douglas is a narrow-gauge steam locomotive that operates on the historic Talyllyn Railway in Wales.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.