Triple

T16089496
Position Surface form Disambiguated ID Type / Status
Subject Line A (Prague Metro) E390322 entity
Predicate usesRollingStock P5426 FINISHED
Object Prague Metro M1 trains
Prague Metro M1 trains are a series of modern electric multiple units that operate on Prague’s metro system, particularly known for serving Line A with upgraded comfort, safety, and performance compared to older rolling stock.
 E1195188 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: Prague Metro M1 trains | Statement: [Line A (Prague Metro), usesRollingStock, Prague Metro M1 trains]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Prague Metro M1 trains
Context triple: [Line A (Prague Metro), usesRollingStock, Prague Metro M1 trains]
  • A. Prague Metro 81-71M trains
    Prague Metro 81-71M trains are a modernized series of Soviet-designed 81-71 metro cars refurbished for improved performance, safety, and passenger comfort on Prague’s underground network.
  • B. Prague Metro
    The Prague Metro is the rapid transit system serving the Czech capital, known for its three main lines, deep underground stations, and role as the backbone of the city's public transportation network.
  • C. Prague commuter rail
    The Prague commuter rail is a suburban rail network that links Prague with its surrounding metropolitan area, providing frequent regional train services that complement the city’s urban transit system.
  • D. Prague trams
    Prague trams are an extensive electric streetcar network that forms a core part of Prague’s public transport system, serving both central and outlying districts.
  • E. Prague public transport network
    The Prague public transport network is an extensive integrated system of metro lines, trams, buses, ferries, and funiculars that provides comprehensive urban and suburban transit throughout the Czech capital and its surrounding areas.
  • 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: Prague Metro M1 trains
Triple: [Line A (Prague Metro), usesRollingStock, Prague Metro M1 trains]
Generated description
Prague Metro M1 trains are a series of modern electric multiple units that operate on Prague’s metro system, particularly known for serving Line A with upgraded comfort, safety, and performance compared to older rolling stock.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Prague Metro M1 trains
Target entity description: Prague Metro M1 trains are a series of modern electric multiple units that operate on Prague’s metro system, particularly known for serving Line A with upgraded comfort, safety, and performance compared to older rolling stock.
  • A. Prague Metro 81-71M trains
    Prague Metro 81-71M trains are a modernized series of Soviet-designed 81-71 metro cars refurbished for improved performance, safety, and passenger comfort on Prague’s underground network.
  • B. Prague Metro
    The Prague Metro is the rapid transit system serving the Czech capital, known for its three main lines, deep underground stations, and role as the backbone of the city's public transportation network.
  • C. Prague commuter rail
    The Prague commuter rail is a suburban rail network that links Prague with its surrounding metropolitan area, providing frequent regional train services that complement the city’s urban transit system.
  • D. Prague trams
    Prague trams are an extensive electric streetcar network that forms a core part of Prague’s public transport system, serving both central and outlying districts.
  • E. Prague public transport network
    The Prague public transport network is an extensive integrated system of metro lines, trams, buses, ferries, and funiculars that provides comprehensive urban and suburban transit throughout the Czech capital and its surrounding areas.
  • 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_69d87f198bc48190a8b7e53ca15b7ead completed April 10, 2026, 4:39 a.m.
NER Named-entity recognition batch_69e1845161908190adca2af94710b2cc completed April 17, 2026, 12:52 a.m.
NED1 Entity disambiguation (via context triple) batch_69ffeb934b448190a486401ac6c01065 completed May 10, 2026, 2:21 a.m.
NEDg Description generation batch_69ffefb0225881909982c384a5beb50a completed May 10, 2026, 2:38 a.m.
NED2 Entity disambiguation (via description) batch_69fff01e1b808190931fff3e91939b82 completed May 10, 2026, 2:40 a.m.
Created at: April 10, 2026, 4:59 a.m.