Triple

T4098541
Position Surface form Disambiguated ID Type / Status
Subject Helsinki Metro E87880 entity
Predicate extension P11869 FINISHED
Object Länsimetro
Länsimetro is a major westward extension of the Helsinki Metro that connects central Helsinki with the neighboring city of Espoo through a series of new underground stations.
 E412715 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: Länsimetro | Statement: [Helsinki Metro, extension, Länsimetro]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Länsimetro
Context triple: [Helsinki Metro, extension, Länsimetro]
  • A. Metro A Line
    The Metro A Line is a light rail line in Los Angeles County that runs between downtown Los Angeles and Long Beach as part of the region’s Metro Rail system.
  • B. Metro Rapid Line 720
    Metro Rapid Line 720 is a high-frequency Los Angeles Metro bus rapid transit route that runs primarily along Wilshire Boulevard, connecting Downtown Los Angeles with Santa Monica.
  • C. Metro Line 53
    Metro Line 53 is a rapid transit line in Amsterdam that connects the city center with the southeastern suburbs as part of the Amsterdam Metro system.
  • D. STL Metro
    STL Metro is a public transit system serving the St. Louis metropolitan area with buses and light rail services.
  • E. METRO A Line
    METRO A Line is a bus rapid transit route in the Minneapolis–Saint Paul metropolitan area that provides frequent, high-speed service along key urban corridors.
  • 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: Länsimetro
Triple: [Helsinki Metro, extension, Länsimetro]
Generated description
Länsimetro is a major westward extension of the Helsinki Metro that connects central Helsinki with the neighboring city of Espoo through a series of new underground stations.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Länsimetro
Target entity description: Länsimetro is a major westward extension of the Helsinki Metro that connects central Helsinki with the neighboring city of Espoo through a series of new underground stations.
  • A. Metro A Line
    The Metro A Line is a light rail line in Los Angeles County that runs between downtown Los Angeles and Long Beach as part of the region’s Metro Rail system.
  • B. Metro Rapid Line 720
    Metro Rapid Line 720 is a high-frequency Los Angeles Metro bus rapid transit route that runs primarily along Wilshire Boulevard, connecting Downtown Los Angeles with Santa Monica.
  • C. Metro Line 53
    Metro Line 53 is a rapid transit line in Amsterdam that connects the city center with the southeastern suburbs as part of the Amsterdam Metro system.
  • D. STL Metro
    STL Metro is a public transit system serving the St. Louis metropolitan area with buses and light rail services.
  • E. METRO A Line
    METRO A Line is a bus rapid transit route in the Minneapolis–Saint Paul metropolitan area that provides frequent, high-speed service along key urban corridors.
  • 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_69b56b725788819091c6aaeccfb86964 completed March 14, 2026, 2:06 p.m.
NEDg Description generation batch_69b56c5bb12881908cf2c74d68ecd5b6 completed March 14, 2026, 2:10 p.m.
NED2 Entity disambiguation (via description) batch_69b56cc5c704819083dac59bf7b3cb83 completed March 14, 2026, 2:12 p.m.
Created at: March 9, 2026, 3:40 p.m.