Triple

T13711696
Position Surface form Disambiguated ID Type / Status
Subject Pazardzhik E328786 entity
Predicate railwayConnection P848 FINISHED
Object 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.
 E1056617 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 railway line | Statement: [Pazardzhik, railwayConnection, Sofia–Plovdiv railway line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Sofia–Plovdiv railway line
Context triple: [Pazardzhik, railwayConnection, Sofia–Plovdiv railway line]
  • A. Sofia–Kulata railway line
    The Sofia–Kulata railway line is a major rail route in southwestern Bulgaria that connects the capital Sofia with the Greek border near Kulata, serving as an important international transport corridor.
  • B. Belgrade–Niš–Sofia railway line
    The Belgrade–Niš–Sofia railway line is a major international rail corridor connecting Serbia’s capital Belgrade with the city of Niš and onward to Bulgaria’s capital Sofia, serving as a key transport route between Central and Southeastern Europe.
  • C. Sofia–Mezdra railway line
    The Sofia–Mezdra railway line is a key Bulgarian rail route connecting the capital Sofia with the town of Mezdra through the scenic Iskar Gorge.
  • D. Varna–Sofia transport axis
    The Varna–Sofia transport axis is a major Bulgarian transportation corridor linking the Black Sea port city of Varna with the capital Sofia and serving as a key route for regional trade and travel.
  • E. railway line Skopje–Thessaloniki
    The railway line Skopje–Thessaloniki is an international rail route connecting North Macedonia’s capital Skopje with the Greek port city of Thessaloniki, serving as a key transport corridor in the Balkans.
  • 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 railway line
Triple: [Pazardzhik, railwayConnection, Sofia–Plovdiv railway line]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Sofia–Plovdiv railway line
Target entity description: 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.
  • A. Sofia–Kulata railway line
    The Sofia–Kulata railway line is a major rail route in southwestern Bulgaria that connects the capital Sofia with the Greek border near Kulata, serving as an important international transport corridor.
  • B. Belgrade–Niš–Sofia railway line
    The Belgrade–Niš–Sofia railway line is a major international rail corridor connecting Serbia’s capital Belgrade with the city of Niš and onward to Bulgaria’s capital Sofia, serving as a key transport route between Central and Southeastern Europe.
  • C. Sofia–Mezdra railway line
    The Sofia–Mezdra railway line is a key Bulgarian rail route connecting the capital Sofia with the town of Mezdra through the scenic Iskar Gorge.
  • D. Varna–Sofia transport axis
    The Varna–Sofia transport axis is a major Bulgarian transportation corridor linking the Black Sea port city of Varna with the capital Sofia and serving as a key route for regional trade and travel.
  • E. railway line Skopje–Thessaloniki
    The railway line Skopje–Thessaloniki is an international rail route connecting North Macedonia’s capital Skopje with the Greek port city of Thessaloniki, serving as a key transport corridor in the Balkans.
  • 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_69d80770b9bc81909f70c8c317d53cff completed April 9, 2026, 8:09 p.m.
NER Named-entity recognition batch_69dd4395e8c0819098719c8cd344aa33 completed April 13, 2026, 7:27 p.m.
NED1 Entity disambiguation (via context triple) batch_69f79d54a68081908df25edf6d5df362 completed May 3, 2026, 7:09 p.m.
NEDg Description generation batch_69f79e1a90408190936cb71e567e10aa completed May 3, 2026, 7:12 p.m.
NED2 Entity disambiguation (via description) batch_69f79ee74ea48190a4c753b12bb9190e completed May 3, 2026, 7:15 p.m.
Created at: April 9, 2026, 9:54 p.m.