Triple

T20368604
Position Surface form Disambiguated ID Type / Status
Subject Bulgarian State Railways E496983 entity
Predicate operatesRoute P3695 FINISHED
Object Sofia–Plovdiv
Sofia–Plovdiv is a major intercity railway route in Bulgaria connecting the capital Sofia with the country’s second-largest city, Plovdiv.
 E1474246 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: Sofia–Plovdiv | Statement: [Bulgarian State Railways, operatesRoute, Sofia–Plovdiv]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Sofia–Plovdiv
Context triple: [Bulgarian State Railways, operatesRoute, Sofia–Plovdiv]
  • A. Sofia–Burgas
    Sofia–Burgas is a major intercity railway route in Bulgaria connecting the capital Sofia with the Black Sea city of Burgas.
  • B. Plovdiv
    Plovdiv is Bulgaria’s second-largest city and one of Europe’s oldest continuously inhabited urban centers, known for its Roman amphitheater, Old Town, and rich cultural heritage.
  • C. Shumen
    Shumen is a city in northeastern Bulgaria known for its historical significance, including nearby medieval capitals and the Monument to 1300 Years of Bulgaria.
  • D. Svishtov
    Svishtov is a town in northern Bulgaria on the Danube River, known for its historical significance, including proximity to the ancient Roman military site of Novae.
  • E. Sliven
    Sliven is a city in eastern Bulgaria known for its textile industry, historic role in Bulgarian national revival, and location near the eastern Balkan Mountains.
  • 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: Sofia–Plovdiv
Triple: [Bulgarian State Railways, operatesRoute, Sofia–Plovdiv]
Generated description
Sofia–Plovdiv is a major intercity railway route in Bulgaria connecting the capital Sofia with the country’s second-largest city, Plovdiv.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Sofia–Plovdiv
Target entity description: Sofia–Plovdiv is a major intercity railway route in Bulgaria connecting the capital Sofia with the country’s second-largest city, Plovdiv.
  • A. Sofia–Burgas
    Sofia–Burgas is a major intercity railway route in Bulgaria connecting the capital Sofia with the Black Sea city of Burgas.
  • B. Plovdiv
    Plovdiv is Bulgaria’s second-largest city and one of Europe’s oldest continuously inhabited urban centers, known for its Roman amphitheater, Old Town, and rich cultural heritage.
  • C. Shumen
    Shumen is a city in northeastern Bulgaria known for its historical significance, including nearby medieval capitals and the Monument to 1300 Years of Bulgaria.
  • D. Svishtov
    Svishtov is a town in northern Bulgaria on the Danube River, known for its historical significance, including proximity to the ancient Roman military site of Novae.
  • E. Sliven
    Sliven is a city in eastern Bulgaria known for its textile industry, historic role in Bulgarian national revival, and location near the eastern Balkan Mountains.
  • 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_6a098fdc7d208190abc6bfc0b0c1db22 completed May 17, 2026, 9:52 a.m.
NEDg Description generation batch_6a0991348c448190901e34167e40df69 completed May 17, 2026, 9:58 a.m.
NED2 Entity disambiguation (via description) batch_6a0991aaae5c8190b7ada4d60f2d875a completed May 17, 2026, 10 a.m.
Created at: April 16, 2026, 11:26 a.m.