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.