Triple

T5377111
Position Surface form Disambiguated ID Type / Status
Subject Chicago and North Western Railway Company E112986 entity
Predicate successorInCommuterOperations P5677 FINISHED
Object Metra E29963 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: Metra | Statement: [Chicago and North Western Railway Company, successorInCommuterOperations, Metra]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Metra
Context triple: [Chicago and North Western Railway Company, successorInCommuterOperations, Metra]
  • A. Metra chosen
    Metra is the commuter rail system serving the Chicago metropolitan area, operating extensive routes that connect the city with its surrounding suburbs.
  • B. Metra Electric District line
    The Metra Electric District line is a commuter rail line in the Chicago metropolitan area that runs from downtown Chicago to its southern suburbs, serving key destinations along the South Side and beyond.
  • C. Metra Heritage Corridor
    The Metra Heritage Corridor is a commuter rail line in the Chicago metropolitan area that provides weekday service between Chicago Union Station and Joliet, Illinois, largely following the historic Illinois & Michigan Canal corridor.
  • D. Metra Rock Island District line
    The Metra Rock Island District line is a commuter rail route in the Chicago metropolitan area that connects downtown Chicago with various southwest suburbs, including Tinley Park.
  • E. MAX Red Line light rail
    The MAX Red Line light rail is a public transit service in the Portland metropolitan area that connects downtown Portland with Portland International Airport and other key destinations.
  • 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: successorInCommuterOperations
Context triple: [Chicago and North Western Railway Company, successorInCommuterOperations, Metra]
  • A. successorOperator chosen
    Indicates that one operator directly follows another in a defined sequence or ordering.
  • B. successorInCity
    Indicates that one entity directly follows or replaces another in holding a particular role, position, or function within the same city.
  • C. successorInCommand
    Indicates that one entity is designated to assume command authority immediately after another entity, typically when the latter is unavailable or their term ends.
  • D. successorInPractice
    Indicates that one entity has taken over the role, position, or function of another in actual practice, even if not formally or officially designated as its successor.
  • E. successorFacility
    Indicates that one facility directly follows and replaces another in function, ownership, or operation.
  • 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_69bd4436a1988190af18dcff7fd306b4 completed March 20, 2026, 12:57 p.m.
NER Named-entity recognition batch_69bd88801b188190b9ac35ed89167fa3 completed March 20, 2026, 5:48 p.m.
NED1 Entity disambiguation (via context triple) batch_69bf3a96fba481909659b13425951068 completed March 22, 2026, 12:40 a.m.
PD Predicate disambiguation batch_69bd846172788190969f24bc7503c05e completed March 20, 2026, 5:31 p.m.
Created at: March 20, 2026, 2:03 p.m.