Triple

T20368698
Position Surface form Disambiguated ID Type / Status
Subject Sofia Central Station E496986 entity
Predicate servedBy P82 FINISHED
Object BDZ Passenger Services
BDZ Passenger Services is the passenger rail division of Bulgaria's national railway company, operating domestic and international train services across the country.
E1426508 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: BDZ Passenger Services | Statement: [Sofia Central Station, servedBy, BDZ Passenger Services]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: BDZ Passenger Services
Context triple: [Sofia Central Station, servedBy, BDZ Passenger Services]
  • A. National Bus Company
    The National Bus Company was a large state-owned operator that oversaw most local and regional bus services in England and Wales from the late 1960s until its privatization in the 1980s.
  • B. National Express Coaches
    National Express Coaches is a major long-distance coach operator in the United Kingdom, providing intercity and airport bus services across an extensive national network.
  • C. Dan Bus Company
    Dan Bus Company is a major Israeli public transportation operator, best known for running extensive bus services in the Tel Aviv metropolitan area.
  • D. First Bus
    First Bus is a major UK bus operator providing local and regional public transport services in numerous towns and cities.
  • E. Golden Arrow Bus Services
    Golden Arrow Bus Services is a major public bus operator in Cape Town, South Africa, providing commuter transport across the city and its surrounding suburbs.
  • 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: BDZ Passenger Services
Triple: [Sofia Central Station, servedBy, BDZ Passenger Services]
Generated description
BDZ Passenger Services is the passenger rail division of Bulgaria's national railway company, operating domestic and international train services across the country.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: BDZ Passenger Services
Target entity description: BDZ Passenger Services is the passenger rail division of Bulgaria's national railway company, operating domestic and international train services across the country.
  • A. National Bus Company
    The National Bus Company was a large state-owned operator that oversaw most local and regional bus services in England and Wales from the late 1960s until its privatization in the 1980s.
  • B. National Express Coaches
    National Express Coaches is a major long-distance coach operator in the United Kingdom, providing intercity and airport bus services across an extensive national network.
  • C. Dan Bus Company
    Dan Bus Company is a major Israeli public transportation operator, best known for running extensive bus services in the Tel Aviv metropolitan area.
  • D. First Bus
    First Bus is a major UK bus operator providing local and regional public transport services in numerous towns and cities.
  • E. Golden Arrow Bus Services
    Golden Arrow Bus Services is a major public bus operator in Cape Town, South Africa, providing commuter transport across the city and its surrounding suburbs.
  • 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.