Triple

T23294827
Position Surface form Disambiguated ID Type / Status
Subject Chicago (Brown Line) station E590134 entity
Predicate hasService P182 FINISHED
Object Brown Line (Ravenswood) trains — NE NERFINISHED

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: Brown Line (Ravenswood) trains | Statement: [Chicago (Brown Line) station, hasService, Brown Line (Ravenswood) trains]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Brown Line (Ravenswood) trains
Context triple: [Chicago (Brown Line) station, hasService, Brown Line (Ravenswood) trains]
  • A. Red Line (Chicago "L")
    The Red Line is a major rapid transit route of the Chicago "L" system, running north–south through the city and operating 24 hours a day.
  • B. Orange Line (CTA)
    The Orange Line (CTA) is a rapid transit route in Chicago that connects the Loop with Midway International Airport and several Southwest Side neighborhoods.
  • C. Orange Line Metro Train
    Orange Line Metro Train is a rapid transit line in Lahore, Pakistan, forming part of the city’s metro system and providing high-capacity urban rail service.
  • D. Brown Line and Purple Line Express
    Brown Line and Purple Line Express are Chicago 'L' rapid transit services that share tracks on the city's North Side, with the Purple Line Express providing weekday rush-hour service to and from downtown.
  • E. Orange Line (Metrorail)
    The Orange Line is a rapid transit route in the Miami Metrorail system that primarily connects Miami International Airport with downtown Miami and other key areas of Miami-Dade County.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Brown Line (Ravenswood) trains
Target entity description: Brown Line (Ravenswood) trains are Chicago Transit Authority 'L' trains that operate on the Brown Line, serving neighborhoods on the city’s North Side and connecting them to downtown.
  • A. Red Line (Chicago "L")
    The Red Line is a major rapid transit route of the Chicago "L" system, running north–south through the city and operating 24 hours a day.
  • B. Orange Line (CTA)
    The Orange Line (CTA) is a rapid transit route in Chicago that connects the Loop with Midway International Airport and several Southwest Side neighborhoods.
  • C. Orange Line Metro Train
    Orange Line Metro Train is a rapid transit line in Lahore, Pakistan, forming part of the city’s metro system and providing high-capacity urban rail service.
  • D. Brown Line and Purple Line Express chosen
    Brown Line and Purple Line Express are Chicago 'L' rapid transit services that share tracks on the city's North Side, with the Purple Line Express providing weekday rush-hour service to and from downtown.
  • E. Orange Line (Metrorail)
    The Orange Line is a rapid transit route in the Miami Metrorail system that primarily connects Miami International Airport with downtown Miami and other key areas of Miami-Dade County.
  • F. None of above.

Provenance (2 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_69e25d1af9d88190a0b9b5e8fa608618 completed April 17, 2026, 4:17 p.m.
NER Named-entity recognition batch_69f196cdce7081908ca1cf9107b87f61 completed April 29, 2026, 5:27 a.m.
Created at: April 17, 2026, 5:03 p.m.