Triple

T3521065
Position Surface form Disambiguated ID Type / Status
Subject Merchandise Mart E74421 entity
Predicate isServedBy P1293 FINISHED
Object Merchandise Mart station
Merchandise Mart station is a Chicago 'L' rapid transit stop serving the Merchandise Mart building and the surrounding River North area.
 E364261 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: Merchandise Mart station | Statement: [Merchandise Mart, isServedBy, Merchandise Mart station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Merchandise Mart station
Context triple: [Merchandise Mart, isServedBy, Merchandise Mart station]
  • A. LaSalle/Van Buren station
    LaSalle/Van Buren station is a Chicago 'L' rapid transit stop in the Loop that serves multiple lines and connects to the nearby LaSalle Street commuter rail station.
  • B. Elmhurst station
    Elmhurst station is a commuter rail stop in Elmhurst, Illinois, on Metra's Union Pacific West Line serving passengers traveling between the western suburbs and downtown Chicago.
  • C. Memorial Park station
    Memorial Park station is a light rail station on the Los Angeles Metro A Line serving the Old Pasadena area in Pasadena, California.
  • D. Forest Park station
    Forest Park station is a Chicago Transit Authority rapid transit station in Forest Park, Illinois, serving as the western endpoint of the Blue Line.
  • E. Hegewisch station
    Hegewisch station is a commuter rail stop in Chicago’s Hegewisch neighborhood that serves both the South Shore Line and Metra Electric District, connecting the city with northwest Indiana.
  • 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: Merchandise Mart station
Triple: [Merchandise Mart, isServedBy, Merchandise Mart station]
Generated description
Merchandise Mart station is a Chicago 'L' rapid transit stop serving the Merchandise Mart building and the surrounding River North area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Merchandise Mart station
Target entity description: Merchandise Mart station is a Chicago 'L' rapid transit stop serving the Merchandise Mart building and the surrounding River North area.
  • A. LaSalle/Van Buren station
    LaSalle/Van Buren station is a Chicago 'L' rapid transit stop in the Loop that serves multiple lines and connects to the nearby LaSalle Street commuter rail station.
  • B. Elmhurst station
    Elmhurst station is a commuter rail stop in Elmhurst, Illinois, on Metra's Union Pacific West Line serving passengers traveling between the western suburbs and downtown Chicago.
  • C. Memorial Park station
    Memorial Park station is a light rail station on the Los Angeles Metro A Line serving the Old Pasadena area in Pasadena, California.
  • D. Forest Park station
    Forest Park station is a Chicago Transit Authority rapid transit station in Forest Park, Illinois, serving as the western endpoint of the Blue Line.
  • E. Hegewisch station
    Hegewisch station is a commuter rail stop in Chicago’s Hegewisch neighborhood that serves both the South Shore Line and Metra Electric District, connecting the city with northwest Indiana.
  • 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_69ad85d0c5488190a3d8e02ebd01a1aa completed March 8, 2026, 2:21 p.m.
NER Named-entity recognition batch_69adbc4c6ac8819096e9c773f3cccbfb completed March 8, 2026, 6:13 p.m.
NED1 Entity disambiguation (via context triple) batch_69b37e87c7948190901d98f34e3987eb completed March 13, 2026, 3:03 a.m.
NEDg Description generation batch_69b37f13d5e881908eaa05b11e493e8b completed March 13, 2026, 3:05 a.m.
NED2 Entity disambiguation (via description) batch_69b37f703ff081908a9aa3588da52d76 completed March 13, 2026, 3:07 a.m.
Created at: March 8, 2026, 3:19 p.m.