Triple

T7273255
Position Surface form Disambiguated ID Type / Status
Subject Durbin and Greenbrier Valley Railroad E161156 entity
Predicate operatesOnFormerLineOf P32801 FINISHED
Object Western Maryland Railway (segments) E63864 NE FINISHED

How this triple was built (3 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: Western Maryland Railway (segments) | Statement: [Durbin and Greenbrier Valley Railroad, operatesOnFormerLineOf, Western Maryland Railway (segments)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Western Maryland Railway (segments)
Context triple: [Durbin and Greenbrier Valley Railroad, operatesOnFormerLineOf, Western Maryland Railway (segments)]
  • A. Western Maryland Railway chosen
    Western Maryland Railway was a historic regional railroad that operated primarily in Maryland, Pennsylvania, and West Virginia, known for hauling coal and freight through the Appalachian region before being absorbed into larger rail systems.
  • B. Walkersville Southern Railroad
    Walkersville Southern Railroad is a heritage railway in Maryland that operates tourist and excursion trains over a restored former Pennsylvania Railroad line.
  • C. Western Maryland Scenic Railroad
    The Western Maryland Scenic Railroad is a heritage tourist railway in Maryland that operates vintage trains through the scenic Allegheny Mountains, preserving and showcasing regional rail history.
  • D. Chambersburg–Hagerstown line
    The Chambersburg–Hagerstown line is a historic railroad route in the Cumberland Valley region that connected Chambersburg, Pennsylvania, with Hagerstown, Maryland, facilitating regional trade and transportation.
  • E. CSX Old Main Line Subdivision
    The CSX Old Main Line Subdivision is a historic freight rail line in Maryland that traces much of the original route of the Baltimore and Ohio Railroad, one of the oldest railroads in the United States.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
PD Predicate disambiguation gpt-5-mini-2025-08-07 
Target predicate: operatesOnFormerLineOf
Context triple: [Durbin and Greenbrier Valley Railroad, operatesOnFormerLineOf, Western Maryland Railway (segments)]
  • A. operatesOnLine
    Indicates that an entity conducts operations, services, or activities along a specific line or route.
  • B. formerLine chosen
    Indicates that an entity previously served as a particular transit or service line but no longer does so.
  • C. formerOperates
    Indicates that an entity previously operated or managed another entity but no longer does so.
  • D. formerLineName
    Indicates that the object is a previous or former name by which the referenced line was known.
  • E. operatedBefore
    Indicates that one entity performed an operation or action at an earlier time than another entity.
  • F. None of above.

Provenance (4 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_69c6885181008190b419040e22939c7c completed March 27, 2026, 1:38 p.m.
NER Named-entity recognition batch_69c6eb8a0b4881908ff27c5a75bd4a95 completed March 27, 2026, 8:41 p.m.
NED1 Entity disambiguation (via context triple) batch_69c7db2936dc8190aed38888bb5e47b8 completed March 28, 2026, 1:44 p.m.
PD Predicate disambiguation batch_69c6e76a84a081908d4184c55b728e48 completed March 27, 2026, 8:24 p.m.
Created at: March 27, 2026, 2:58 p.m.