Old Main Line
E927332
Old Main Line is a historic section of the Birmingham Canal Navigations in England, forming part of the early industrial-era canal network around Birmingham.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Old Main Line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11471575 — 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: Old Main Line Context triple: [Birmingham Canal Navigations, hasPart, Old Main Line]
-
A.
Old Main Line Trail
Old Main Line Trail is a recreational hiking and biking path in Maryland that follows the historic route of one of the nation’s earliest railroad lines through Patapsco Valley.
-
B.
Jamestown Line
The Jamestown Line was a key defensive position held by United Nations forces during the Korean War, forming part of the stabilized front after major maneuver warfare had ended.
-
C.
Battell Trail
Battell Trail is a popular hiking route in Vermont that ascends Mount Abraham through forested terrain to reach scenic summit views.
-
D.
Stillman Trail
Stillman Trail is a popular hiking route in New York’s Hudson Highlands that traverses Storm King Mountain and offers scenic views of the Hudson River valley.
-
E.
Ou Main Line
The Ōu Main Line is a major Japanese railway route in the Tōhoku region that runs roughly north–south through Honshu, connecting key cities including Aomori.
- 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: Old Main Line Target entity description: Old Main Line is a historic section of the Birmingham Canal Navigations in England, forming part of the early industrial-era canal network around Birmingham.
-
A.
Old Main Line Trail
Old Main Line Trail is a recreational hiking and biking path in Maryland that follows the historic route of one of the nation’s earliest railroad lines through Patapsco Valley.
-
B.
Jamestown Line
The Jamestown Line was a key defensive position held by United Nations forces during the Korean War, forming part of the stabilized front after major maneuver warfare had ended.
-
C.
Battell Trail
Battell Trail is a popular hiking route in Vermont that ascends Mount Abraham through forested terrain to reach scenic summit views.
-
D.
Stillman Trail
Stillman Trail is a popular hiking route in New York’s Hudson Highlands that traverses Storm King Mountain and offers scenic views of the Hudson River valley.
-
E.
Ou Main Line
The Ōu Main Line is a major Japanese railway route in the Tōhoku region that runs roughly north–south through Honshu, connecting key cities including Aomori.
- F. None of above. chosen
Statements (35)
| Predicate | Object |
|---|---|
| instanceOf |
canal
ⓘ
historic waterway ⓘ |
| basinCountry | United Kingdom ⓘ |
| connectsTo |
Birmingham Canal
NERFINISHED
ⓘ
New Main Line NERFINISHED ⓘ Wolverhampton Level canals NERFINISHED ⓘ |
| country | England ⓘ |
| currentUse |
cycling route
ⓘ
leisure boating ⓘ recreational walking route ⓘ |
| elevation | Wolverhampton Level NERFINISHED ⓘ |
| hasFeature |
aqueducts
ⓘ
locks ⓘ towpaths ⓘ tunnels ⓘ |
| hasHistoricalSignificance |
contributed to growth of Birmingham as an industrial centre
ⓘ
supported coal and goods transport for Birmingham industries ⓘ |
| hasNameOrigin | named to distinguish it from the later New Main Line ⓘ |
| heritageStatus | historic canal line ⓘ |
| historicalPeriod | Industrial Revolution NERFINISHED ⓘ |
| locatedIn |
Birmingham
NERFINISHED
ⓘ
United Kingdom ⓘ West Midlands NERFINISHED ⓘ |
| maintainedBy | Canal & River Trust NERFINISHED ⓘ |
| networkRole | original main line of Birmingham Canal Navigations ⓘ |
| partOf |
Birmingham Canal Navigations
NERFINISHED
ⓘ
early industrial-era canal network around Birmingham ⓘ |
| passesNear | Birmingham city centre NERFINISHED ⓘ |
| passesThrough |
Smethwick
NERFINISHED
ⓘ
Tipton NERFINISHED ⓘ |
| region | Black Country NERFINISHED ⓘ |
| use |
freight transport
ⓘ
industrial transport ⓘ |
| waterwaySystem | Birmingham Canal Navigations system NERFINISHED ⓘ |
| waterwayType | narrow canal ⓘ |
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: Old Main Line Description of subject: Old Main Line is a historic section of the Birmingham Canal Navigations in England, forming part of the early industrial-era canal network around Birmingham.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.