Triple

T437413
Position Surface form Disambiguated ID Type / Status
Subject Harpers Ferry, West Virginia E10039 entity
Predicate transportCrossing P416 FINISHED
Object Harpers Ferry railroad bridge over Potomac River
The Harpers Ferry railroad bridge over the Potomac River is a historic rail crossing that links Harpers Ferry, West Virginia, with Maryland, serving as a key transportation and Civil War–era landmark in the region.
E57506 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: Harpers Ferry railroad bridge over Potomac River | Statement: [Harpers Ferry, West Virginia, transportCrossing, Harpers Ferry railroad bridge over Potomac River]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Harpers Ferry railroad bridge over Potomac River
Context triple: [Harpers Ferry, West Virginia, transportCrossing, Harpers Ferry railroad bridge over Potomac River]
  • A. Harpers Ferry, West Virginia
    Harpers Ferry, West Virginia is a historic town at the confluence of the Potomac and Shenandoah rivers, best known for John Brown’s 1859 raid and its pivotal role in the American Civil War.
  • B. Francis Scott Key Bridge (Baltimore)
    The Francis Scott Key Bridge in Baltimore is a major steel arch bridge spanning the Patapsco River and forming part of the Baltimore Beltway, named in honor of the author of the U.S. national anthem.
  • C. Longfellow Bridge
    Longfellow Bridge is a historic steel and granite bridge in Boston, Massachusetts, known for carrying road and rail traffic between Boston and Cambridge across the Charles River.
  • D. Old North Bridge
    Old North Bridge is a historic wooden bridge in Concord, Massachusetts, famous as the site of one of the first battles of the American Revolutionary War on April 19, 1775.
  • E. Rochambeau Bridge
    The Rochambeau Bridge is a major highway span over the Potomac River in Washington, D.C., forming part of the 14th Street Bridge complex that carries traffic between the District and Virginia.
  • 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: Harpers Ferry railroad bridge over Potomac River
Triple: [Harpers Ferry, West Virginia, transportCrossing, Harpers Ferry railroad bridge over Potomac River]
Generated description
The Harpers Ferry railroad bridge over the Potomac River is a historic rail crossing that links Harpers Ferry, West Virginia, with Maryland, serving as a key transportation and Civil War–era landmark in the region.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Harpers Ferry railroad bridge over Potomac River
Target entity description: The Harpers Ferry railroad bridge over the Potomac River is a historic rail crossing that links Harpers Ferry, West Virginia, with Maryland, serving as a key transportation and Civil War–era landmark in the region.
  • A. Harpers Ferry, West Virginia
    Harpers Ferry, West Virginia is a historic town at the confluence of the Potomac and Shenandoah rivers, best known for John Brown’s 1859 raid and its pivotal role in the American Civil War.
  • B. Francis Scott Key Bridge (Baltimore)
    The Francis Scott Key Bridge in Baltimore is a major steel arch bridge spanning the Patapsco River and forming part of the Baltimore Beltway, named in honor of the author of the U.S. national anthem.
  • C. Longfellow Bridge
    Longfellow Bridge is a historic steel and granite bridge in Boston, Massachusetts, known for carrying road and rail traffic between Boston and Cambridge across the Charles River.
  • D. Old North Bridge
    Old North Bridge is a historic wooden bridge in Concord, Massachusetts, famous as the site of one of the first battles of the American Revolutionary War on April 19, 1775.
  • E. Rochambeau Bridge
    The Rochambeau Bridge is a major highway span over the Potomac River in Washington, D.C., forming part of the 14th Street Bridge complex that carries traffic between the District and Virginia.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: transportCrossing
Context triple: [Harpers Ferry, West Virginia, transportCrossing, Harpers Ferry railroad bridge over Potomac River]
  • A. crossingType
    Indicates the specific kind or category of crossing (e.g., how or where one thing passes over, through, or across another).
  • B. crossedByRiver
    Indicates that a river passes across or through a specified area, feature, or route.
  • C. crossedBy chosen
    Indicates that one entity (typically a path, line, or boundary) is intersected or traversed by another entity.
  • D. hasBorderCrossing
    Indicates that there exists a point or facility where movement or transit is possible between the boundaries of two adjacent regions or jurisdictions.
  • E. transportCorridor
    Indicates a route or pathway used to move people, goods, or resources between locations.
  • 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_69a2e8465ef481909655c681b01e2986 completed Feb. 28, 2026, 1:06 p.m.
NER Named-entity recognition batch_69a2ef26bb78819089b3b5dac0330619 completed Feb. 28, 2026, 1:35 p.m.
NED1 Entity disambiguation (via context triple) batch_69a44f522acc81909d16527bd08e458d completed March 1, 2026, 2:38 p.m.
NEDg Description generation batch_69a44fd970d881909ed3ae28debf4760 completed March 1, 2026, 2:40 p.m.
NED2 Entity disambiguation (via description) batch_69a4506c3d4881908eb97e489e4b9078 completed March 1, 2026, 2:42 p.m.
PD Predicate disambiguation batch_69a2eddb98e081909efcf9f0a955a908 completed Feb. 28, 2026, 1:30 p.m.
Created at: Feb. 28, 2026, 1:11 p.m.