Triple

T9702890
Position Surface form Disambiguated ID Type / Status
Subject East Side Access E234821 entity
Predicate includes P1393 FINISHED
Object Grand Central Madison station
Grand Central Madison station is a major Long Island Rail Road terminal beneath Grand Central Terminal in Midtown Manhattan, created to bring LIRR service directly to Manhattan’s East Side.
 E815436 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: Grand Central Madison station | Statement: [East Side Access, includes, Grand Central Madison station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Grand Central Madison station
Context triple: [East Side Access, includes, Grand Central Madison 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. Chicago Union Station
    Chicago Union Station is a major intercity and commuter rail terminal in downtown Chicago that serves as a central hub for Amtrak and regional rail services.
  • C. Civic Center Station
    Civic Center Station is a major San Francisco Bay Area Rapid Transit (BART) and Muni Metro subway station serving the heart of San Francisco near key civic and cultural institutions.
  • D. Brookfield station
    Brookfield station is a commuter rail stop in Brookfield, Illinois, serving passengers on Metra’s BNSF Railway Line between Chicago and its western suburbs.
  • E. Franklin Park station
    Franklin Park station is a commuter rail stop in Franklin Park, Illinois, served by Metra’s North Central Service and Milwaukee District/West lines.
  • 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: Grand Central Madison station
Triple: [East Side Access, includes, Grand Central Madison station]
Generated description
Grand Central Madison station is a major Long Island Rail Road terminal beneath Grand Central Terminal in Midtown Manhattan, created to bring LIRR service directly to Manhattan’s East Side.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Grand Central Madison station
Target entity description: Grand Central Madison station is a major Long Island Rail Road terminal beneath Grand Central Terminal in Midtown Manhattan, created to bring LIRR service directly to Manhattan’s East Side.
  • 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. Chicago Union Station
    Chicago Union Station is a major intercity and commuter rail terminal in downtown Chicago that serves as a central hub for Amtrak and regional rail services.
  • C. Civic Center Station
    Civic Center Station is a major San Francisco Bay Area Rapid Transit (BART) and Muni Metro subway station serving the heart of San Francisco near key civic and cultural institutions.
  • D. Brookfield station
    Brookfield station is a commuter rail stop in Brookfield, Illinois, serving passengers on Metra’s BNSF Railway Line between Chicago and its western suburbs.
  • E. Franklin Park station
    Franklin Park station is a commuter rail stop in Franklin Park, Illinois, served by Metra’s North Central Service and Milwaukee District/West lines.
  • 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_69ca84cc78808190a56f3402b7c139a7 completed March 30, 2026, 2:12 p.m.
NER Named-entity recognition batch_69cd9d7283188190bd50e18f643ad0d3 completed April 1, 2026, 10:34 p.m.
NED1 Entity disambiguation (via context triple) batch_69d19132687c8190baf3a60af1b789a8 completed April 4, 2026, 10:31 p.m.
NEDg Description generation batch_69d193150c00819080ed0fbb050b60bf completed April 4, 2026, 10:39 p.m.
NED2 Entity disambiguation (via description) batch_69d19416efd48190865d0178e5e893fa completed April 4, 2026, 10:43 p.m.
Created at: March 30, 2026, 8:18 p.m.