Triple
T68674
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Virginia Railway Express |
E1371
|
entity |
| Predicate | endPointOfManassasLine |
P390
|
FINISHED |
| Object |
Broad Run, Virginia
Broad Run, Virginia is an unincorporated community in Prince William County best known as the western terminus of the Virginia Railway Express Manassas Line and its associated commuter rail station and yard.
|
E17139
|
NE FINISHED |
How this triple was built (5 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Broad Run, Virginia | Statement: [Virginia Railway Express, endPointOfManassasLine, Broad Run, Virginia]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Broad Run, Virginia Context triple: [Virginia Railway Express, endPointOfManassasLine, Broad Run, Virginia]
-
A.
Antietam Creek, Maryland
Antietam Creek in Maryland is a historic waterway best known as the site of the Battle of Antietam, one of the bloodiest and most consequential engagements of the American Civil War.
-
B.
Riverway
Riverway is a linear park and waterway in Boston that forms part of the Emerald Necklace, offering scenic green space and recreational paths near the Longwood Medical Area.
-
C.
Manassas Line
The Manassas Line is a commuter rail route in Northern Virginia that connects suburban communities to Washington, D.C. as part of the Virginia Railway Express system.
-
D.
Bailey's Crossroads
Bailey's Crossroads is an unincorporated suburban community in Fairfax County, Virginia, located just outside Washington, D.C.
-
E.
Potomac River
The Potomac River is a major waterway in the Mid-Atlantic United States that flows through the Appalachian region and forms part of the boundary between Maryland, Virginia, and Washington, D.C.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Broad Run, Virginia Triple: [Virginia Railway Express, endPointOfManassasLine, Broad Run, Virginia]
Generated description
Broad Run, Virginia is an unincorporated community in Prince William County best known as the western terminus of the Virginia Railway Express Manassas Line and its associated commuter rail station and yard.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Broad Run, Virginia Target entity description: Broad Run, Virginia is an unincorporated community in Prince William County best known as the western terminus of the Virginia Railway Express Manassas Line and its associated commuter rail station and yard.
-
A.
Antietam Creek, Maryland
Antietam Creek in Maryland is a historic waterway best known as the site of the Battle of Antietam, one of the bloodiest and most consequential engagements of the American Civil War.
-
B.
Riverway
Riverway is a linear park and waterway in Boston that forms part of the Emerald Necklace, offering scenic green space and recreational paths near the Longwood Medical Area.
-
C.
Manassas Line
The Manassas Line is a commuter rail route in Northern Virginia that connects suburban communities to Washington, D.C. as part of the Virginia Railway Express system.
-
D.
Bailey's Crossroads
Bailey's Crossroads is an unincorporated suburban community in Fairfax County, Virginia, located just outside Washington, D.C.
-
E.
Potomac River
The Potomac River is a major waterway in the Mid-Atlantic United States that flows through the Appalachian region and forms part of the boundary between Maryland, Virginia, and Washington, D.C.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: endPointOfManassasLine Context triple: [Virginia Railway Express, endPointOfManassasLine, Broad Run, Virginia]
-
A.
openedAsRedLineStation
Indicates that a station began operation specifically as part of the Red Line when it first opened.
-
B.
railwayLine
Indicates that there is a railway line connection or route associated with or passing through the referenced entity.
-
C.
terminusCity
Indicates that a transportation route or service ends or has its final stop in a particular city.
-
D.
terminusNorth
Indicates that one entity serves as the northern endpoint or final stop of another entity, such as a route, line, or path.
-
E.
endPoint
chosen
Indicates the terminal location, limit, or final state reached by an object, process, or path in a given relationship or action.
- F. None of above.
Provenance (6 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69a24c06b3bc8190aa4ac89026115efc |
completed | Feb. 28, 2026, 1:59 a.m. |
| NER | Named-entity recognition | batch_69a24fd16c248190a6ee4cd96c388772 |
completed | Feb. 28, 2026, 2:15 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a2bf646ce88190b7c48f66c786e6bd |
completed | Feb. 28, 2026, 10:11 a.m. |
| NEDg | Description generation | batch_69a2bfecc5488190821fcc0de226752a |
completed | Feb. 28, 2026, 10:14 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a2c05832bc819094c6a1de5cf31806 |
completed | Feb. 28, 2026, 10:15 a.m. |
| PD | Predicate disambiguation | batch_69a24ea8cfd081908a26edad2473dde3 |
completed | Feb. 28, 2026, 2:10 a.m. |
Created at: Feb. 28, 2026, 2:03 a.m.