Triple

T5151288
Position Surface form Disambiguated ID Type / Status
Subject Sofia–Kulata railway line E116198 entity
Predicate startingPoint P389 FINISHED
Object Sofia Central Station
Sofia Central Station is the main railway hub in Bulgaria’s capital city, serving as a key national and international transport gateway.
 E496986 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 Central Station | Statement: [Sofia–Kulata railway line, startingPoint, Sofia Central Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Sofia Central Station
Context triple: [Sofia–Kulata railway line, startingPoint, Sofia Central Station]
  • A. Samara Railway Station
    Samara Railway Station is a major transport hub and architecturally prominent railway terminal in the Russian city of Samara.
  • B. Monastiraki station
    Monastiraki station is a central Athens Metro hub located in the historic Monastiraki district, serving as a key interchange point near major archaeological and tourist sites.
  • C. Sofia Metro
    Sofia Metro is the rapid transit system serving Bulgaria’s capital city, providing high-capacity urban rail transport across Sofia and its metropolitan area.
  • D. Belorussky railway station
    Belorussky railway station is one of Moscow’s major railway terminals, serving long-distance, suburban, and airport express trains, including services to Sheremetyevo Airport.
  • E. Bessarion station
    Bessarion station is a Toronto subway station on Line 4 Sheppard, serving the North York area with access to nearby residential and commercial developments.
  • 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 Central Station
Triple: [Sofia–Kulata railway line, startingPoint, Sofia Central Station]
Generated description
Sofia Central Station is the main railway hub in Bulgaria’s capital city, serving as a key national and international transport gateway.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Sofia Central Station
Target entity description: Sofia Central Station is the main railway hub in Bulgaria’s capital city, serving as a key national and international transport gateway.
  • A. Samara Railway Station
    Samara Railway Station is a major transport hub and architecturally prominent railway terminal in the Russian city of Samara.
  • B. Monastiraki station
    Monastiraki station is a central Athens Metro hub located in the historic Monastiraki district, serving as a key interchange point near major archaeological and tourist sites.
  • C. Sofia Metro
    Sofia Metro is the rapid transit system serving Bulgaria’s capital city, providing high-capacity urban rail transport across Sofia and its metropolitan area.
  • D. Belorussky railway station
    Belorussky railway station is one of Moscow’s major railway terminals, serving long-distance, suburban, and airport express trains, including services to Sheremetyevo Airport.
  • E. Bessarion station
    Bessarion station is a Toronto subway station on Line 4 Sheppard, serving the North York area with access to nearby residential and commercial developments.
  • 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_69bd445d94788190b72e2cc563120995 completed March 20, 2026, 12:58 p.m.
NER Named-entity recognition batch_69bd78d965548190b09f574acf3b9b1a completed March 20, 2026, 4:42 p.m.
NED1 Entity disambiguation (via context triple) batch_69bed004538c81908fac258ea99f7e63 completed March 21, 2026, 5:06 p.m.
NEDg Description generation batch_69bed07d478c8190aac215cb05bedae0 completed March 21, 2026, 5:08 p.m.
NED2 Entity disambiguation (via description) batch_69bed0d56af481908a3fb0693f151fb3 completed March 21, 2026, 5:09 p.m.
Created at: March 20, 2026, 1:44 p.m.