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.