Triple

T20368538
Position Surface form Disambiguated ID Type / Status
Subject Bulgarian rail network E496982 entity
Predicate hasHub P2413 FINISHED
Object Plovdiv railway junction
Plovdiv railway junction is a major rail hub in Bulgaria that connects key national and international railway lines across the country.
 E1426502 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: Plovdiv railway junction | Statement: [Bulgarian rail network, hasHub, Plovdiv railway junction]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Plovdiv railway junction
Context triple: [Bulgarian rail network, hasHub, Plovdiv railway junction]
  • A. St. Kliment Ohridski Station
    St. Kliment Ohridski Station is a Bulgarian research base in Antarctica used for scientific studies and exploration.
  • B. Sofia–Plovdiv railway line
    The Sofia–Plovdiv railway line is a major Bulgarian rail corridor linking the capital Sofia with the city of Plovdiv and serving as part of an important trans-European transport route.
  • C. Dzhankoy railway station
    Dzhankoy railway station is a major rail junction in the town of Dzhankoy in Crimea, serving as an important hub for regional and long-distance train routes.
  • D. Velingrad
    Velingrad is a renowned Bulgarian spa town famous for its numerous mineral springs and status as one of the country’s leading balneological and wellness resorts.
  • E. Vitosha station
    Vitosha station is a metro station on the Sofia Metro system in Sofia, Bulgaria, serving the area near Vitosha Mountain.
  • 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: Plovdiv railway junction
Triple: [Bulgarian rail network, hasHub, Plovdiv railway junction]
Generated description
Plovdiv railway junction is a major rail hub in Bulgaria that connects key national and international railway lines across the country.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Plovdiv railway junction
Target entity description: Plovdiv railway junction is a major rail hub in Bulgaria that connects key national and international railway lines across the country.
  • A. St. Kliment Ohridski Station
    St. Kliment Ohridski Station is a Bulgarian research base in Antarctica used for scientific studies and exploration.
  • B. Sofia–Plovdiv railway line
    The Sofia–Plovdiv railway line is a major Bulgarian rail corridor linking the capital Sofia with the city of Plovdiv and serving as part of an important trans-European transport route.
  • C. Dzhankoy railway station
    Dzhankoy railway station is a major rail junction in the town of Dzhankoy in Crimea, serving as an important hub for regional and long-distance train routes.
  • D. Velingrad
    Velingrad is a renowned Bulgarian spa town famous for its numerous mineral springs and status as one of the country’s leading balneological and wellness resorts.
  • E. Vitosha station
    Vitosha station is a metro station on the Sofia Metro system in Sofia, Bulgaria, serving the area near Vitosha Mountain.
  • 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_69e0b4a4f9b081908a5a021919c21ccb completed April 16, 2026, 10:06 a.m.
NER Named-entity recognition batch_69e678734b188190bb2c5863023f9f8c completed April 20, 2026, 7:03 p.m.
NED1 Entity disambiguation (via context triple) batch_6a08708d48c08190ac0ccbc910d4af4b completed May 16, 2026, 1:26 p.m.
NEDg Description generation batch_6a087129ce3c8190a67ac34ec697ad31 completed May 16, 2026, 1:29 p.m.
NED2 Entity disambiguation (via description) batch_6a0871e3573c81908216b5e508374081 completed May 16, 2026, 1:32 p.m.
Created at: April 16, 2026, 11:26 a.m.