Triple

T3512873
Position Surface form Disambiguated ID Type / Status
Subject ProRail E74236 entity
Predicate subsidiary P258 FINISHED
Object Railinfratrust
Railinfratrust is the Dutch state-owned holding company that owns the national railway infrastructure and under which rail network manager ProRail operates.
E366351 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: Railinfratrust | Statement: [ProRail, subsidiary, Railinfratrust]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Railinfratrust
Context triple: [ProRail, subsidiary, Railinfratrust]
  • A. Railtrack
    Railtrack was the former private owner and operator of most of Britain’s railway infrastructure, which was later replaced by the publicly owned Network Rail after financial and safety controversies.
  • B. Tri-Rail
    Tri-Rail is a commuter rail system in South Florida that connects major cities and transportation hubs across the Miami, Fort Lauderdale, and West Palm Beach metropolitan area.
  • C. Strategic Rail Authority
    The Strategic Rail Authority was a UK government body responsible for overseeing and planning the country’s passenger rail services and franchises in the late 1990s and early 2000s.
  • D. Conrail
    Conrail was a major U.S. freight railroad formed in the 1970s to take over and revitalize the operations of several bankrupt Northeastern railroads.
  • E. NI Railways
    NI Railways is the primary passenger rail operator in Northern Ireland, running the region’s railway network and services.
  • 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: Railinfratrust
Triple: [ProRail, subsidiary, Railinfratrust]
Generated description
Railinfratrust is the Dutch state-owned holding company that owns the national railway infrastructure and under which rail network manager ProRail operates.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Railinfratrust
Target entity description: Railinfratrust is the Dutch state-owned holding company that owns the national railway infrastructure and under which rail network manager ProRail operates.
  • A. Railtrack
    Railtrack was the former private owner and operator of most of Britain’s railway infrastructure, which was later replaced by the publicly owned Network Rail after financial and safety controversies.
  • B. Tri-Rail
    Tri-Rail is a commuter rail system in South Florida that connects major cities and transportation hubs across the Miami, Fort Lauderdale, and West Palm Beach metropolitan area.
  • C. Strategic Rail Authority
    The Strategic Rail Authority was a UK government body responsible for overseeing and planning the country’s passenger rail services and franchises in the late 1990s and early 2000s.
  • D. Conrail
    Conrail was a major U.S. freight railroad formed in the 1970s to take over and revitalize the operations of several bankrupt Northeastern railroads.
  • E. NI Railways
    NI Railways is the primary passenger rail operator in Northern Ireland, running the region’s railway network and services.
  • 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_69ad85cfb5c881909c9a2edd9d6043cc completed March 8, 2026, 2:21 p.m.
NER Named-entity recognition batch_69adbc2d0bf481909d1f19a87d147b63 completed March 8, 2026, 6:13 p.m.
NED1 Entity disambiguation (via context triple) batch_69b37e76c3a08190831402ff0c680196 completed March 13, 2026, 3:03 a.m.
NEDg Description generation batch_69b38232467c81909eb831bb0747cb77 completed March 13, 2026, 3:19 a.m.
NED2 Entity disambiguation (via description) batch_69b385f078d48190a72e61c59aa27e43 completed March 13, 2026, 3:35 a.m.
Created at: March 8, 2026, 3:19 p.m.