Triple

T5972508
Position Surface form Disambiguated ID Type / Status
Subject SL18 tram E132907 entity
Predicate manufacturer P490 FINISHED
Object Construcciones y Auxiliar de Ferrocarriles
Construcciones y Auxiliar de Ferrocarriles (CAF) is a Spanish multinational company that designs and manufactures railway vehicles and related equipment for urban, regional, and high-speed rail systems worldwide.
E559741 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: Construcciones y Auxiliar de Ferrocarriles | Statement: [SL18 tram, manufacturer, Construcciones y Auxiliar de Ferrocarriles]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Construcciones y Auxiliar de Ferrocarriles
Context triple: [SL18 tram, manufacturer, Construcciones y Auxiliar de Ferrocarriles]
  • A. Empresa de los Ferrocarriles del Estado
    Empresa de los Ferrocarriles del Estado is Chile’s state-owned railway company responsible for operating and managing much of the country’s passenger and freight rail services.
  • B. Consolidated Rail Corporation
    Consolidated Rail Corporation, commonly known as Conrail, was a major U.S. freight railroad created in the 1970s to take over and revitalize the operations of several bankrupt Northeastern railroads.
  • C. Locomotive Works
    Locomotive Works is the section of the Derby railway works dedicated to the construction, maintenance, and repair of railway locomotives.
  • D. Ferrocarril Chihuahua al Pacífico
    Ferrocarril Chihuahua al Pacífico is a scenic Mexican railway line, commonly known as "El Chepe," that traverses the Sierra Madre Occidental and the Copper Canyon region.
  • E. Central Pacific Railroad
    The Central Pacific Railroad was a major 19th-century American railroad company that built the western portion of the First Transcontinental Railroad, linking California to the eastern United States and transforming transportation and commerce.
  • 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: Construcciones y Auxiliar de Ferrocarriles
Triple: [SL18 tram, manufacturer, Construcciones y Auxiliar de Ferrocarriles]
Generated description
Construcciones y Auxiliar de Ferrocarriles (CAF) is a Spanish multinational company that designs and manufactures railway vehicles and related equipment for urban, regional, and high-speed rail systems worldwide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Construcciones y Auxiliar de Ferrocarriles
Target entity description: Construcciones y Auxiliar de Ferrocarriles (CAF) is a Spanish multinational company that designs and manufactures railway vehicles and related equipment for urban, regional, and high-speed rail systems worldwide.
  • A. Empresa de los Ferrocarriles del Estado
    Empresa de los Ferrocarriles del Estado is Chile’s state-owned railway company responsible for operating and managing much of the country’s passenger and freight rail services.
  • B. Consolidated Rail Corporation
    Consolidated Rail Corporation, commonly known as Conrail, was a major U.S. freight railroad created in the 1970s to take over and revitalize the operations of several bankrupt Northeastern railroads.
  • C. Locomotive Works
    Locomotive Works is the section of the Derby railway works dedicated to the construction, maintenance, and repair of railway locomotives.
  • D. Ferrocarril Chihuahua al Pacífico
    Ferrocarril Chihuahua al Pacífico is a scenic Mexican railway line, commonly known as "El Chepe," that traverses the Sierra Madre Occidental and the Copper Canyon region.
  • E. Central Pacific Railroad
    The Central Pacific Railroad was a major 19th-century American railroad company that built the western portion of the First Transcontinental Railroad, linking California to the eastern United States and transforming transportation and commerce.
  • 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_69c0086deab081908550159ca23eec9b completed March 22, 2026, 3:19 p.m.
NER Named-entity recognition batch_69c04a00c3588190b335d7d3341b6d68 completed March 22, 2026, 7:58 p.m.
NED1 Entity disambiguation (via context triple) batch_69c0e40fa2488190b82d604d51b73090 completed March 23, 2026, 6:56 a.m.
NEDg Description generation batch_69c0f85e33d8819080d9d721421b4c5b completed March 23, 2026, 8:22 a.m.
NED2 Entity disambiguation (via description) batch_69c0fad0bdf08190bf6599d492848582 completed March 23, 2026, 8:33 a.m.
Created at: March 22, 2026, 4:03 p.m.