Triple

T16914361
Position Surface form Disambiguated ID Type / Status
Subject Helsinki tram network E410283 entity
Predicate notableRollingStock P125202 FINISHED
Object Artic tram
The Artic tram is a modern low-floor, articulated tram model used in Helsinki, designed for reliable operation in harsh Nordic conditions.
E1239877 NE FINISHED

How this triple was built (5 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: Artic tram | Statement: [Helsinki tram network, notableRollingStock, Artic tram]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Artic tram
Context triple: [Helsinki tram network, notableRollingStock, Artic tram]
  • A. Tram 2000
    Tram 2000 is a series of articulated light rail vehicles used for urban public transport in Zürich, Switzerland.
  • B. Pesa Swing tram
    The Pesa Swing tram is a modern low-floor articulated tram model produced by Polish manufacturer Pesa, widely used in urban public transport systems such as Warsaw.
  • C. T-68 tram
    The T-68 tram was a type of light rail vehicle used on Greater Manchester’s Metrolink system in the UK before being replaced by newer models.
  • D. SL95 tram
    The SL95 tram is a high-floor, bi-directional tram model used in Oslo, Norway, known for its large capacity and operation on the city’s light rail and tram network.
  • E. LM-93 tram
    The LM-93 tram is a Russian-built light rail vehicle model commonly used in city tram and metrotram systems such as the Volgograd Metrotram.
  • 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: Artic tram
Triple: [Helsinki tram network, notableRollingStock, Artic tram]
Generated description
The Artic tram is a modern low-floor, articulated tram model used in Helsinki, designed for reliable operation in harsh Nordic conditions.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Artic tram
Target entity description: The Artic tram is a modern low-floor, articulated tram model used in Helsinki, designed for reliable operation in harsh Nordic conditions.
  • A. Tram 2000
    Tram 2000 is a series of articulated light rail vehicles used for urban public transport in Zürich, Switzerland.
  • B. Pesa Swing tram
    The Pesa Swing tram is a modern low-floor articulated tram model produced by Polish manufacturer Pesa, widely used in urban public transport systems such as Warsaw.
  • C. T-68 tram
    The T-68 tram was a type of light rail vehicle used on Greater Manchester’s Metrolink system in the UK before being replaced by newer models.
  • D. SL95 tram
    The SL95 tram is a high-floor, bi-directional tram model used in Oslo, Norway, known for its large capacity and operation on the city’s light rail and tram network.
  • E. LM-93 tram
    The LM-93 tram is a Russian-built light rail vehicle model commonly used in city tram and metrotram systems such as the Volgograd Metrotram.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: notableRollingStock
Context triple: [Helsinki tram network, notableRollingStock, Artic tram]
  • A. ownedRollingStock
    Indicates that one entity possesses or has ownership rights over specific rolling stock (such as trains, railcars, or locomotives).
  • B. formerRollingStock
    Indicates that an entity was previously used as rolling stock (e.g., railway vehicles) but no longer serves in that capacity.
  • C. laterRollingStock
    Indicates that one piece of rolling stock comes into use or service at a later time than another piece of rolling stock.
  • D. introducedRollingStock
    Indicates that an entity caused new rolling stock (such as trains or rail vehicles) to be put into service or use.
  • E. relatedRollingStock
    Indicates a relationship between pieces of rolling stock that are associated with each other, such as through shared operations, configurations, or functional linkage.
  • F. None of above. chosen

Provenance (7 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_69d886c7b1e481908c3766dfa8c13458 completed April 10, 2026, 5:12 a.m.
NER Named-entity recognition batch_69e3ca3f1a2c8190a512ccc09a080eb4 completed April 18, 2026, 6:15 p.m.
NED1 Entity disambiguation (via context triple) batch_6a00c7be679c8190b9d0b0b9cfe185d3 completed May 10, 2026, 6 p.m.
NEDg Description generation batch_6a00c9059a2c819099ede5a7b6e25b18 completed May 10, 2026, 6:05 p.m.
NED2 Entity disambiguation (via description) batch_6a00c9d1c6a0819083635b8246cc82e7 completed May 10, 2026, 6:09 p.m.
PD Predicate disambiguation batch_69e32b9489408190bcb2ede567ff5bf9 completed April 18, 2026, 6:58 a.m.
PDg Predicate description generation batch_69e34fb7c8c8819086975b7955b7d8ef completed April 18, 2026, 9:32 a.m.
Created at: April 10, 2026, 5:30 a.m.