Triple

T4098539
Position Surface form Disambiguated ID Type / Status
Subject Helsinki Metro E87880 entity
Predicate notableStation P3858 FINISHED
Object Itäkeskus station
Itäkeskus station is a major eastern Helsinki Metro hub and one of the system’s busiest stations, serving the Itäkeskus commercial and residential area.
 E425476 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: Itäkeskus station | Statement: [Helsinki Metro, notableStation, Itäkeskus station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Itäkeskus station
Context triple: [Helsinki Metro, notableStation, Itäkeskus station]
  • A. Matinkylä station
    Matinkylä station is a metro station in the Espoo district of Matinkylä that serves as a key western endpoint of the Helsinki Metro system.
  • B. Kamppi station
    Kamppi station is a major underground metro and bus terminal hub in central Helsinki, Finland, serving as one of the city’s key public transport interchanges.
  • C. Rautatientori station
    Rautatientori station is a central underground station in the Helsinki Metro system located beneath Helsinki’s main railway square, serving as a major hub for public transportation in the city.
  • D. Syosset station
    Syosset station is a Long Island Rail Road commuter rail stop serving the community of Syosset in Nassau County, New York.
  • E. Vuosaari station
    Vuosaari station is an eastern Helsinki Metro station serving the Vuosaari district as one of the line’s terminal endpoints.
  • 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: Itäkeskus station
Triple: [Helsinki Metro, notableStation, Itäkeskus station]
Generated description
Itäkeskus station is a major eastern Helsinki Metro hub and one of the system’s busiest stations, serving the Itäkeskus commercial and residential area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Itäkeskus station
Target entity description: Itäkeskus station is a major eastern Helsinki Metro hub and one of the system’s busiest stations, serving the Itäkeskus commercial and residential area.
  • A. Matinkylä station
    Matinkylä station is a metro station in the Espoo district of Matinkylä that serves as a key western endpoint of the Helsinki Metro system.
  • B. Kamppi station
    Kamppi station is a major underground metro and bus terminal hub in central Helsinki, Finland, serving as one of the city’s key public transport interchanges.
  • C. Rautatientori station
    Rautatientori station is a central underground station in the Helsinki Metro system located beneath Helsinki’s main railway square, serving as a major hub for public transportation in the city.
  • D. Syosset station
    Syosset station is a Long Island Rail Road commuter rail stop serving the community of Syosset in Nassau County, New York.
  • E. Vuosaari station
    Vuosaari station is an eastern Helsinki Metro station serving the Vuosaari district as one of the line’s terminal endpoints.
  • 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_69aed94564cc8190a9c1457daedb6e7f completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69aefd0bdea48190805a79515ee92709 completed March 9, 2026, 5:02 p.m.
NED1 Entity disambiguation (via context triple) batch_69b5b75d07e481909794a08d6bc52358 completed March 14, 2026, 7:30 p.m.
NEDg Description generation batch_69b5b7e7f48881908ebb773499aebd5e completed March 14, 2026, 7:32 p.m.
NED2 Entity disambiguation (via description) batch_69b5b881c80081909af084ff4b43b01e completed March 14, 2026, 7:35 p.m.
Created at: March 9, 2026, 3:40 p.m.