Triple

T8654607
Position Surface form Disambiguated ID Type / Status
Subject Ongar E205382 entity
Predicate formerRailTerminusOf P26272 FINISHED
Object Epping–Ongar branch line E640226 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: Epping–Ongar branch line | Statement: [Ongar, formerRailTerminusOf, Epping–Ongar branch line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Epping–Ongar branch line
Context triple: [Ongar, formerRailTerminusOf, Epping–Ongar branch line]
  • A. Epping to Ongar branch chosen
    The Epping to Ongar branch was a rural stretch of railway in Essex that once formed the outermost section of the London Underground’s Central line before its closure in the 1990s.
  • B. Chingford branch line
    The Chingford branch line is a suburban railway route in northeast London that connects central London with the Chingford area, serving several intermediate stations along the way.
  • C. Epping line
    The Epping line was a suburban railway line in Melbourne, Australia, that historically served the northern suburbs before being extended and renamed the Mernda line.
  • D. Romford–Upminster line
    The Romford–Upminster line is a short suburban railway in east London linking Romford and Upminster, operated as part of the London Overground network.
  • E. Hertford East branch line
    The Hertford East branch line is a suburban railway line in Hertfordshire, England, providing passenger services between Hertford East and the main rail network via the Lea Valley corridor.
  • 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: formerRailTerminusOf
Context triple: [Ongar, formerRailTerminusOf, Epping–Ongar branch line]
  • A. railroadTerminusFor
    Indicates that one location serves as the end point or final station of a particular railroad line for another location.
  • B. railLineTerminus chosen
    Indicates that a rail line ends or terminates at the specified location or station.
  • C. connectsToRailStation
    Indicates that one entity has a direct link, route, or access connection to a rail station.
  • D. formerRailwayLine
    Indicates that a railway line previously existed in the past but is no longer in operation or has been decommissioned.
  • E. railTerminus
    Indicates that a railway line or service ends at a particular station or location, which serves as its final terminus.
  • 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_69ca8350897c819086cde7596fbe5fe7 completed March 30, 2026, 2:06 p.m.
NER Named-entity recognition batch_69cc48432568819093b9a867b4f62b78 completed March 31, 2026, 10:18 p.m.
NED1 Entity disambiguation (via context triple) batch_69ceccdaad2881908f131ee9da2841d1 completed April 2, 2026, 8:08 p.m.
PD Predicate disambiguation batch_69cc45619460819091e83ffdec99c865 completed March 31, 2026, 10:06 p.m.
Created at: March 30, 2026, 6:29 p.m.