Triple

T1534379
Position Surface form Disambiguated ID Type / Status
Subject Toronto streetcar system E32517 entity
Predicate formerRollingStock P29565 FINISHED
Object CLRV streetcar
The CLRV streetcar was a Canadian-built, single-unit light rail vehicle that served as the backbone of Toronto’s streetcar fleet from the late 1970s until its retirement in the 2010s.
E174522 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: CLRV streetcar | Statement: [Toronto streetcar system, formerRollingStock, CLRV streetcar]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: CLRV streetcar
Context triple: [Toronto streetcar system, formerRollingStock, CLRV streetcar]
  • A. PCC streetcar
    The PCC streetcar is a standardized, streamlined electric tram design introduced in the 1930s that became one of the most widely used and influential streetcar types in North America and beyond.
  • B. Brill streetcar
    The Brill streetcar is a historic electric tramcar model built by the J.G. Brill Company, known for its early 20th-century use in urban street railway systems and preservation in heritage streetcar fleets.
  • C. Peter Witt streetcar
    The Peter Witt streetcar is a historic early 20th-century tram design, originally developed in Cleveland and widely adopted in North American and European cities for its efficient boarding layout and distinctive classic appearance.
  • D. Sun Link modern streetcar
    Sun Link modern streetcar is Tucson’s electric streetcar system that provides fixed-rail public transit service through the city’s central corridors.
  • E. TECO Line Streetcar System
    The TECO Line Streetcar System is a heritage-style electric streetcar network serving downtown Tampa, Florida, and its surrounding districts as a public transit and tourist attraction.
  • 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: CLRV streetcar
Triple: [Toronto streetcar system, formerRollingStock, CLRV streetcar]
Generated description
The CLRV streetcar was a Canadian-built, single-unit light rail vehicle that served as the backbone of Toronto’s streetcar fleet from the late 1970s until its retirement in the 2010s.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: CLRV streetcar
Target entity description: The CLRV streetcar was a Canadian-built, single-unit light rail vehicle that served as the backbone of Toronto’s streetcar fleet from the late 1970s until its retirement in the 2010s.
  • A. PCC streetcar
    The PCC streetcar is a standardized, streamlined electric tram design introduced in the 1930s that became one of the most widely used and influential streetcar types in North America and beyond.
  • B. Brill streetcar
    The Brill streetcar is a historic electric tramcar model built by the J.G. Brill Company, known for its early 20th-century use in urban street railway systems and preservation in heritage streetcar fleets.
  • C. Peter Witt streetcar
    The Peter Witt streetcar is a historic early 20th-century tram design, originally developed in Cleveland and widely adopted in North American and European cities for its efficient boarding layout and distinctive classic appearance.
  • D. Sun Link modern streetcar
    Sun Link modern streetcar is Tucson’s electric streetcar system that provides fixed-rail public transit service through the city’s central corridors.
  • E. TECO Line Streetcar System
    The TECO Line Streetcar System is a heritage-style electric streetcar network serving downtown Tampa, Florida, and its surrounding districts as a public transit and tourist attraction.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: formerRollingStock
Context triple: [Toronto streetcar system, formerRollingStock, CLRV streetcar]
  • A. introducedRollingStock
    Indicates that an entity caused new rolling stock (such as trains or rail vehicles) to be put into service or use.
  • B. rollingStockType
    Indicates the specific category or type of railway rolling stock associated with an entity (e.g., locomotive, passenger car, freight wagon).
  • C. replacedRollingStock
    Indicates that one rolling stock asset has been substituted or superseded by another in service or operational use.
  • D. usesRollingStock
    Indicates that one entity employs or operates specific rolling stock (such as rail vehicles) in its activities or services.
  • E. railcode
    Indicates that an entity is associated with a specific railway code used for identification or classification within a rail system.
  • 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_69a885ea86308190998f6bc14bb91f8e completed March 4, 2026, 7:20 p.m.
NER Named-entity recognition batch_69a915f323bc8190aa757142c225e0ae completed March 5, 2026, 5:34 a.m.
NED1 Entity disambiguation (via context triple) batch_69ad295da0988190b1dc171bcdfe4d71 completed March 8, 2026, 7:46 a.m.
NEDg Description generation batch_69ad29dc9fd08190b67527f0662c92dc completed March 8, 2026, 7:48 a.m.
NED2 Entity disambiguation (via description) batch_69ad2a4d71a88190b67ed21beebbb479 completed March 8, 2026, 7:50 a.m.
PD Predicate disambiguation batch_69a907b046448190be8ea4d7b20255f7 completed March 5, 2026, 4:33 a.m.
PDg Predicate description generation batch_69a915f1694081908f87b509eda1309f completed March 5, 2026, 5:34 a.m.
Created at: March 4, 2026, 7:26 p.m.