CSX Transportation Cumberland Subdivision
E271553
CSX Transportation's Cumberland Subdivision is a major freight rail line running through Maryland and West Virginia that also hosts MARC commuter rail service on the Brunswick Line.
All labels observed (2)
| Label | Occurrences |
|---|---|
| CSX Cumberland Subdivision | 2 |
| CSX Transportation Cumberland Subdivision canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2474337 — 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: CSX Transportation Cumberland Subdivision Context triple: [MARC Brunswick Line, usesRailwayLine, CSX Transportation Cumberland Subdivision]
-
A.
CSX Capital Subdivision
CSX Capital Subdivision is a CSX Transportation rail line in Maryland that serves as a key freight and commuter corridor between Washington, D.C., and Baltimore.
-
B.
CSX RF&P Subdivision
The CSX RF&P Subdivision is a major CSX Transportation rail line in Virginia that forms part of the busy freight and passenger corridor linking Washington, D.C. with Richmond and points south.
-
C.
CSX Trenton Subdivision
The CSX Trenton Subdivision is a freight rail line in the northeastern United States operated by CSX Transportation, forming part of a major corridor between Philadelphia and North Jersey.
-
D.
CSX Transportation Metropolitan Subdivision
The CSX Transportation Metropolitan Subdivision is a major freight and passenger rail corridor in Maryland and the Washington, D.C. area, forming part of CSX's network and hosting MARC commuter rail service.
-
E.
Baltimore and Susquehanna Railroad
The Baltimore and Susquehanna Railroad was an early 19th-century American railroad that helped pioneer rail transportation in Maryland and Pennsylvania, eventually becoming part of the Northern Central Railway system.
- 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: CSX Transportation Cumberland Subdivision Target entity description: CSX Transportation's Cumberland Subdivision is a major freight rail line running through Maryland and West Virginia that also hosts MARC commuter rail service on the Brunswick Line.
-
A.
CSX Capital Subdivision
CSX Capital Subdivision is a CSX Transportation rail line in Maryland that serves as a key freight and commuter corridor between Washington, D.C., and Baltimore.
-
B.
CSX RF&P Subdivision
The CSX RF&P Subdivision is a major CSX Transportation rail line in Virginia that forms part of the busy freight and passenger corridor linking Washington, D.C. with Richmond and points south.
-
C.
CSX Trenton Subdivision
The CSX Trenton Subdivision is a freight rail line in the northeastern United States operated by CSX Transportation, forming part of a major corridor between Philadelphia and North Jersey.
-
D.
CSX Transportation Metropolitan Subdivision
The CSX Transportation Metropolitan Subdivision is a major freight and passenger rail corridor in Maryland and the Washington, D.C. area, forming part of CSX's network and hosting MARC commuter rail service.
-
E.
Baltimore and Susquehanna Railroad
The Baltimore and Susquehanna Railroad was an early 19th-century American railroad that helped pioneer rail transportation in Maryland and Pennsylvania, eventually becoming part of the Northern Central Railway system.
- F. None of above. chosen
Statements (28)
| Predicate | Object |
|---|---|
| instanceOf | railway line ⓘ |
| connectsWith |
other CSX subdivisions in Maryland
ⓘ
other CSX subdivisions in West Virginia ⓘ |
| country | United States of America ⓘ |
| electrification | not electrified ⓘ |
| hasBridgeCrossing |
Potomac River
ⓘ
surface form:
Potomac River (at Harpers Ferry area)
|
| historicalOperator | Baltimore and Ohio Railroad ⓘ |
| historicalUse | part of original B&O main line across the Allegheny Mountains ⓘ |
| hostsService |
MARC Brunswick Line
ⓘ
surface form:
MARC Train Brunswick Line
|
| lineType | main line ⓘ |
| locatedIn |
Maryland
ⓘ
West Virginia ⓘ |
| operator | CSX Transportation ⓘ |
| owner | CSX Transportation ⓘ |
| partOf | CSX Transportation network ⓘ |
| partOfCorridor |
CSX Chicago–Boston main line
ⓘ
surface form:
CSX east–west mainline through the Alleghenies
|
| passesThrough |
Brunswick, Maryland
ⓘ
Cumberland, Maryland ⓘ Harpers Ferry, West Virginia ⓘ |
| primaryTraffic | freight trains ⓘ |
| railGauge | standard gauge ⓘ |
| region |
Appalachian region of the United States
ⓘ
surface form:
Appalachian region
|
| safetySystem | wayside signals ⓘ |
| secondaryTraffic | commuter trains ⓘ |
| trackType | heavy rail ⓘ |
| usedByAgency | Maryland Transit Administration ⓘ |
| usedFor |
commuter rail service
ⓘ
freight rail transport ⓘ |
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: CSX Transportation Cumberland Subdivision Description of subject: CSX Transportation's Cumberland Subdivision is a major freight rail line running through Maryland and West Virginia that also hosts MARC commuter rail service on the Brunswick Line.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
Shenandoah Junction, West Virginia
→
hasRailJunctionOf
→
CSX Transportation Cumberland Subdivision
ⓘ
this entity surface form:
CSX Cumberland Subdivision
this entity surface form:
CSX Cumberland Subdivision
CSX Transportation Metropolitan Subdivision
→
connectsTo
→
CSX Transportation Cumberland Subdivision
ⓘ