Triple

T1125644
Position Surface form Disambiguated ID Type / Status
Subject Tucson E24712 entity
Predicate hasStreetcar P474 FINISHED
Object 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.
E134148 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: Sun Link modern streetcar | Statement: [Tucson, hasStreetcar, Sun Link modern streetcar]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Sun Link modern streetcar
Context triple: [Tucson, hasStreetcar, Sun Link modern 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. Portland Streetcar
    Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
  • D. 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.
  • E. Metrocars
    Metrocars are the electric multiple unit trains specifically designed and used for passenger services on the Tyne and Wear Metro system in North East England.
  • 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: Sun Link modern streetcar
Triple: [Tucson, hasStreetcar, Sun Link modern streetcar]
Generated description
Sun Link modern streetcar is Tucson’s electric streetcar system that provides fixed-rail public transit service through the city’s central corridors.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Sun Link modern streetcar
Target entity description: Sun Link modern streetcar is Tucson’s electric streetcar system that provides fixed-rail public transit service through the city’s central corridors.
  • 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. Portland Streetcar
    Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
  • D. 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.
  • E. Metrocars
    Metrocars are the electric multiple unit trains specifically designed and used for passenger services on the Tyne and Wear Metro system in North East England.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: hasStreetcar
Context triple: [Tucson, hasStreetcar, Sun Link modern streetcar]
  • A. hasStreetcarSystem chosen
    Indicates that a place possesses or is served by an operational streetcar (tram) transit system.
  • B. hasTramway
    Indicates that a location or area is served by, contains, or is connected to a tramway system.
  • C. hasStreet
    Indicates that an entity is located on, associated with, or identified by a particular street.
  • D. hasLightRailSystem
    Indicates that a place possesses and operates a light rail transit system.
  • E. hasMetroLine
    Indicates that a location or area is served by, or connected to, a specific metro (subway) line.
  • F. None of above.

Provenance (6 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_69a4940712c88190aa244f3fc6070a65 completed March 1, 2026, 7:31 p.m.
NER Named-entity recognition batch_69a4bc4bc21881909dcfe628f59f3e8c completed March 1, 2026, 10:23 p.m.
NED1 Entity disambiguation (via context triple) batch_69ac667127008190b2aa1f3aafc87340 completed March 7, 2026, 5:54 p.m.
NEDg Description generation batch_69ac66f0e874819092d51913f08905d4 completed March 7, 2026, 5:57 p.m.
NED2 Entity disambiguation (via description) batch_69ac676cb9a08190a83d47de80126677 completed March 7, 2026, 5:59 p.m.
PD Predicate disambiguation batch_69a4bb4749ac8190b0fbddac2e9b2586 completed March 1, 2026, 10:18 p.m.
Created at: March 1, 2026, 7:44 p.m.