Triple

T437388
Position Surface form Disambiguated ID Type / Status
Subject Harpers Ferry, West Virginia E10039 entity
Predicate servedByRailway P848 FINISHED
Object MARC Brunswick Line
The MARC Brunswick Line is a Maryland Area Regional Commuter rail service that operates between Washington, D.C., and points in western Maryland and eastern West Virginia, providing weekday commuter transportation along the former B&O Railroad main line.
E55051 NE FINISHED

How this triple was built (4 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: MARC Brunswick Line | Statement: [Harpers Ferry, West Virginia, servedByRailway, MARC Brunswick Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: MARC Brunswick Line
Context triple: [Harpers Ferry, West Virginia, servedByRailway, MARC Brunswick Line]
  • A. MARC Penn Line
    The MARC Penn Line is a Maryland commuter rail service that runs along the Amtrak Northeast Corridor between Washington, D.C., and Perryville, serving numerous communities in Prince George’s County and beyond.
  • B. Trenton Line
    Trenton Line is a commuter rail service in the Philadelphia region operated by SEPTA Regional Rail, connecting Center City Philadelphia with Trenton, New Jersey.
  • C. Morris & Essex Lines
    The Morris & Essex Lines are a set of commuter rail lines in northern New Jersey that provide passenger service between New York City, Hoboken, and various suburban communities.
  • D. Pelham Line
    The Pelham Line is a New York City Subway route in the Bronx and Manhattan, operated by the IRT division and primarily served by the 6 train.
  • E. Fen Line
    The Fen Line is a railway route in eastern England that runs north from Cambridge towards King’s Lynn, serving towns and communities across Cambridgeshire and Norfolk.
  • 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: MARC Brunswick Line
Triple: [Harpers Ferry, West Virginia, servedByRailway, MARC Brunswick Line]
Generated description
The MARC Brunswick Line is a Maryland Area Regional Commuter rail service that operates between Washington, D.C., and points in western Maryland and eastern West Virginia, providing weekday commuter transportation along the former B&O Railroad main line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: MARC Brunswick Line
Target entity description: The MARC Brunswick Line is a Maryland Area Regional Commuter rail service that operates between Washington, D.C., and points in western Maryland and eastern West Virginia, providing weekday commuter transportation along the former B&O Railroad main line.
  • A. MARC Penn Line
    The MARC Penn Line is a Maryland commuter rail service that runs along the Amtrak Northeast Corridor between Washington, D.C., and Perryville, serving numerous communities in Prince George’s County and beyond.
  • B. Trenton Line
    Trenton Line is a commuter rail service in the Philadelphia region operated by SEPTA Regional Rail, connecting Center City Philadelphia with Trenton, New Jersey.
  • C. Morris & Essex Lines
    The Morris & Essex Lines are a set of commuter rail lines in northern New Jersey that provide passenger service between New York City, Hoboken, and various suburban communities.
  • D. Pelham Line
    The Pelham Line is a New York City Subway route in the Bronx and Manhattan, operated by the IRT division and primarily served by the 6 train.
  • E. Fen Line
    The Fen Line is a railway route in eastern England that runs north from Cambridge towards King’s Lynn, serving towns and communities across Cambridgeshire and Norfolk.
  • F. None of above. chosen

Provenance (5 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_69a4366d2ec881908d8c0b28e4ca55fc completed March 1, 2026, 12:51 p.m.
NEDg Description generation batch_69a436bb57848190a56dc2c340ea6229 completed March 1, 2026, 12:53 p.m.
NED2 Entity disambiguation (via description) batch_69a4372b4c3c8190a5ccfe0d9325d9ef completed March 1, 2026, 12:55 p.m.
Created at: Feb. 28, 2026, 1:11 p.m.