Triple
T20368695
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Sofia Central Station |
E496986
|
entity |
| Predicate | ownedBy |
P347
|
FINISHED |
| Object | National Railway Infrastructure Company |
—
|
NE NERFINISHED |
How this triple was built (2 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: National Railway Infrastructure Company | Statement: [Sofia Central Station, ownedBy, National Railway Infrastructure Company]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: National Railway Infrastructure Company Context triple: [Sofia Central Station, ownedBy, National Railway Infrastructure Company]
-
A.
National Railway Infrastructure Company
chosen
The National Railway Infrastructure Company is Bulgaria’s state-owned entity responsible for managing, maintaining, and developing the country’s railway infrastructure.
-
B.
Country Rail Infrastructure Authority
The Country Rail Infrastructure Authority was a New South Wales government agency responsible for managing and maintaining regional rail infrastructure prior to its functions being absorbed into Transport for NSW.
-
C.
Indian Railway Finance Corporation
Indian Railway Finance Corporation is a government-owned financial institution in India that raises funds and provides financing for the expansion and modernization of the Indian Railways network.
-
D.
Rail Vikas Nigam Limited
Rail Vikas Nigam Limited is an Indian government-owned company responsible for implementing and fast-tracking rail infrastructure and capacity enhancement projects across the Indian Railways network.
-
E.
GB Railways
GB Railways was a British train operating company that owned and managed several passenger rail franchises in the UK following rail privatization.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69e0b4a4f9b081908a5a021919c21ccb |
completed | April 16, 2026, 10:06 a.m. |
| NER | Named-entity recognition | batch_69e678734b188190bb2c5863023f9f8c |
completed | April 20, 2026, 7:03 p.m. |
Created at: April 16, 2026, 11:26 a.m.