Triple

T16909108
Position Surface form Disambiguated ID Type / Status
Subject LaSalle station (Chicago Transit Authority Blue Line) E410146 entity
Predicate connectsTo P845 FINISHED
Object LaSalle Street Station (Metra)
LaSalle Street Station (Metra) is a major commuter rail terminal in downtown Chicago serving Metra’s Rock Island District line and providing connections to the city’s rapid transit system.
 E1240193 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: LaSalle Street Station (Metra) | Statement: [LaSalle station (Chicago Transit Authority Blue Line), connectsTo, LaSalle Street Station (Metra)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: LaSalle Street Station (Metra)
Context triple: [LaSalle station (Chicago Transit Authority Blue Line), connectsTo, LaSalle Street Station (Metra)]
  • A. Lombard Metra station
    Lombard Metra station is a commuter rail stop in Lombard, Illinois, providing regional train service that connects the village’s historic downtown with the broader Chicago metropolitan area.
  • B. Washington/Wabash station (CTA)
    Washington/Wabash station (CTA) is an elevated Chicago 'L' station in the Loop serving the Brown, Green, Orange, Pink, and Purple Lines.
  • C. Chicago/Franklin station (Chicago "L")
    Chicago/Franklin station was a former elevated rapid transit stop on Chicago’s "L" system that operated on the North Side main line near the city’s River North area.
  • D. Sedgwick station (Chicago "L")
    Sedgwick station is a historic Chicago "L" rapid transit stop on the city's North Side that has operated since the early 20th century.
  • E. Paulina station (CTA)
    Paulina station (CTA) was a former Chicago 'L' rapid transit station on the Brown Line located in the Lakeview neighborhood.
  • 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: LaSalle Street Station (Metra)
Triple: [LaSalle station (Chicago Transit Authority Blue Line), connectsTo, LaSalle Street Station (Metra)]
Generated description
LaSalle Street Station (Metra) is a major commuter rail terminal in downtown Chicago serving Metra’s Rock Island District line and providing connections to the city’s rapid transit system.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: LaSalle Street Station (Metra)
Target entity description: LaSalle Street Station (Metra) is a major commuter rail terminal in downtown Chicago serving Metra’s Rock Island District line and providing connections to the city’s rapid transit system.
  • A. Lombard Metra station
    Lombard Metra station is a commuter rail stop in Lombard, Illinois, providing regional train service that connects the village’s historic downtown with the broader Chicago metropolitan area.
  • B. Washington/Wabash station (CTA)
    Washington/Wabash station (CTA) is an elevated Chicago 'L' station in the Loop serving the Brown, Green, Orange, Pink, and Purple Lines.
  • C. Chicago/Franklin station (Chicago "L")
    Chicago/Franklin station was a former elevated rapid transit stop on Chicago’s "L" system that operated on the North Side main line near the city’s River North area.
  • D. Sedgwick station (Chicago "L")
    Sedgwick station is a historic Chicago "L" rapid transit stop on the city's North Side that has operated since the early 20th century.
  • E. Paulina station (CTA)
    Paulina station (CTA) was a former Chicago 'L' rapid transit station on the Brown Line located in the Lakeview neighborhood.
  • 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_69d886c7b1e481908c3766dfa8c13458 completed April 10, 2026, 5:12 a.m.
NER Named-entity recognition batch_69e3ca3bdc3081908a9b4f6e63405348 completed April 18, 2026, 6:15 p.m.
NED1 Entity disambiguation (via context triple) batch_6a00c7b98d5c8190b61de47b246549e3 completed May 10, 2026, 6 p.m.
NEDg Description generation batch_6a00c9cb23d08190b1757015f4374e85 completed May 10, 2026, 6:09 p.m.
NED2 Entity disambiguation (via description) batch_6a00ca99c7108190a4be2cb08b414888 completed May 10, 2026, 6:12 p.m.
Created at: April 10, 2026, 5:30 a.m.