Triple

T5022456
Position Surface form Disambiguated ID Type / Status
Subject Millennium Station E112884 entity
Predicate ticketing P395 FINISHED
Object Metra ticket office
The Metra ticket office is a staffed sales and customer service counter where passengers can purchase Metra train tickets and obtain travel information.
 E486843 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: Metra ticket office | Statement: [Millennium Station, ticketing, Metra ticket office]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Metra ticket office
Context triple: [Millennium Station, ticketing, Metra ticket office]
  • A. Metra at Jefferson Park
    Metra at Jefferson Park is a commuter rail station in Chicago’s Jefferson Park neighborhood that serves as a key transfer point between Metra trains and CTA transit services.
  • B. Metra at Forest Park
    Metra at Forest Park is a commuter rail station in Forest Park, Illinois, serving Metra’s Union Pacific West Line and providing regional rail connections to and from Chicago.
  • C. Harvey Metra station
    Harvey Metra station is a commuter rail station in Harvey, Illinois, serving Metra’s Electric District and providing regional rail connections to Chicago and surrounding suburbs.
  • D. White Flint Metro station
    White Flint Metro station is a Washington Metro Red Line station in North Bethesda, Maryland, serving the surrounding commercial and residential developments along Rockville Pike.
  • E. 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.
  • 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: Metra ticket office
Triple: [Millennium Station, ticketing, Metra ticket office]
Generated description
The Metra ticket office is a staffed sales and customer service counter where passengers can purchase Metra train tickets and obtain travel information.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Metra ticket office
Target entity description: The Metra ticket office is a staffed sales and customer service counter where passengers can purchase Metra train tickets and obtain travel information.
  • A. Metra at Jefferson Park
    Metra at Jefferson Park is a commuter rail station in Chicago’s Jefferson Park neighborhood that serves as a key transfer point between Metra trains and CTA transit services.
  • B. Metra at Forest Park
    Metra at Forest Park is a commuter rail station in Forest Park, Illinois, serving Metra’s Union Pacific West Line and providing regional rail connections to and from Chicago.
  • C. Harvey Metra station
    Harvey Metra station is a commuter rail station in Harvey, Illinois, serving Metra’s Electric District and providing regional rail connections to Chicago and surrounding suburbs.
  • D. White Flint Metro station
    White Flint Metro station is a Washington Metro Red Line station in North Bethesda, Maryland, serving the surrounding commercial and residential developments along Rockville Pike.
  • E. 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.
  • 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_69bd4435c2f48190be593158cbfcf8a3 completed March 20, 2026, 12:57 p.m.
NER Named-entity recognition batch_69bd73656edc8190b802ad38d9552b58 completed March 20, 2026, 4:18 p.m.
NED1 Entity disambiguation (via context triple) batch_69be9282e2b08190abfa2c3e450957d4 completed March 21, 2026, 12:43 p.m.
NEDg Description generation batch_69be94965c4c8190b91be72f483d4b29 completed March 21, 2026, 12:52 p.m.
NED2 Entity disambiguation (via description) batch_69be9527906481909d6a42a262a67c31 completed March 21, 2026, 12:55 p.m.
Created at: March 20, 2026, 1:36 p.m.