Triple

T17721488
Position Surface form Disambiguated ID Type / Status
Subject CAF Urbos 3 E442346 entity
Predicate usedInSystem P1248 FINISHED
Object Tallinn tram network
The Tallinn tram network is the electric tramway system serving Estonia’s capital city, forming a key part of its public transport infrastructure.
E1283355 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: Tallinn tram network | Statement: [CAF Urbos 3, usedInSystem, Tallinn tram network]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Tallinn tram network
Context triple: [CAF Urbos 3, usedInSystem, Tallinn tram network]
  • A. Helsinki tram network
    The Helsinki tram network is an extensive urban light rail system that serves as a primary mode of public transportation within Finland’s capital city.
  • B. Saint Petersburg tram network
    The Saint Petersburg tram network is an extensive urban tramway system in Saint Petersburg, Russia, historically one of the world’s largest and a key component of the city’s public transport.
  • C. Tallinn–Tartu railway
    The Tallinn–Tartu railway is a major rail line in Estonia connecting the capital city Tallinn with the university city of Tartu, serving as one of the country's primary passenger and freight corridors.
  • D. Helsinki Metro
    The Helsinki Metro is the rapid transit system serving Finland’s capital region, known as the world’s northernmost metro network and a key part of the city’s public transportation.
  • E. Tartu–Koidula railway
    The Tartu–Koidula railway is a rail line in southeastern Estonia that connects the city of Tartu with the border area near Koidula, serving both passenger and freight traffic.
  • 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: Tallinn tram network
Triple: [CAF Urbos 3, usedInSystem, Tallinn tram network]
Generated description
The Tallinn tram network is the electric tramway system serving Estonia’s capital city, forming a key part of its public transport infrastructure.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Tallinn tram network
Target entity description: The Tallinn tram network is the electric tramway system serving Estonia’s capital city, forming a key part of its public transport infrastructure.
  • A. Helsinki tram network
    The Helsinki tram network is an extensive urban light rail system that serves as a primary mode of public transportation within Finland’s capital city.
  • B. Saint Petersburg tram network
    The Saint Petersburg tram network is an extensive urban tramway system in Saint Petersburg, Russia, historically one of the world’s largest and a key component of the city’s public transport.
  • C. Tallinn–Tartu railway
    The Tallinn–Tartu railway is a major rail line in Estonia connecting the capital city Tallinn with the university city of Tartu, serving as one of the country's primary passenger and freight corridors.
  • D. Helsinki Metro
    The Helsinki Metro is the rapid transit system serving Finland’s capital region, known as the world’s northernmost metro network and a key part of the city’s public transportation.
  • E. Tartu–Koidula railway
    The Tartu–Koidula railway is a rail line in southeastern Estonia that connects the city of Tartu with the border area near Koidula, serving both passenger and freight traffic.
  • 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_69d8b9ec79688190b86bdcef85a7b3aa completed April 10, 2026, 8:50 a.m.
NER Named-entity recognition batch_69e47486438c8190abe27eb4eb2c6fdf completed April 19, 2026, 6:21 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0230300f548190b9e3bdb6570446ff completed May 11, 2026, 7:38 p.m.
NEDg Description generation batch_6a02315558cc8190829599a78de8eee2 completed May 11, 2026, 7:43 p.m.
NED2 Entity disambiguation (via description) batch_6a0231e54c308190af6f80f42848536d completed May 11, 2026, 7:45 p.m.
Created at: April 10, 2026, 10:07 a.m.