Triple

T9275062
Position Surface form Disambiguated ID Type / Status
Subject Tartu railway station E222924 entity
Predicate railwayLine P848 FINISHED
Object Tartu–Koidula railway
The Tartu–Koidula railway is a rail line in southeastern Estonia that connects the city of Tartu with the border area near Koidula, serving both passenger and freight traffic.
E791319 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: Tartu–Koidula railway | Statement: [Tartu railway station, railwayLine, Tartu–Koidula railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Tartu–Koidula railway
Context triple: [Tartu railway station, railwayLine, Tartu–Koidula railway]
  • A. Tartu–Valga railway
    The Tartu–Valga railway is a rail line in Estonia connecting the city of Tartu with the border town of Valga, forming part of an important north–south route toward Latvia.
  • B. Tallinn–Tartu railway
    The Tallinn–Tartu railway is a major rail line in Estonia connecting the capital city Tallinn with the university city of Tartu, serving as one of the country's primary passenger and freight corridors.
  • C. Riga–Tukums railway
    The Riga–Tukums railway is a key rail line in Latvia linking the capital Riga with the town of Tukums and serving as an important regional passenger and freight route.
  • D. Riga–Jelgava railway
    The Riga–Jelgava railway is a key rail line in Latvia that links the capital city Riga with the nearby city of Jelgava, serving both passenger and freight traffic.
  • E. Riga–Daugavpils railway
    The Riga–Daugavpils railway is a major rail line in Latvia that links the capital Riga with the country’s second-largest city, Daugavpils, serving as an important route for both passenger and freight transport.
  • 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: Tartu–Koidula railway
Triple: [Tartu railway station, railwayLine, Tartu–Koidula railway]
Generated description
The Tartu–Koidula railway is a rail line in southeastern Estonia that connects the city of Tartu with the border area near Koidula, serving both passenger and freight traffic.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Tartu–Koidula railway
Target entity description: The Tartu–Koidula railway is a rail line in southeastern Estonia that connects the city of Tartu with the border area near Koidula, serving both passenger and freight traffic.
  • A. Tartu–Valga railway
    The Tartu–Valga railway is a rail line in Estonia connecting the city of Tartu with the border town of Valga, forming part of an important north–south route toward Latvia.
  • B. Tallinn–Tartu railway
    The Tallinn–Tartu railway is a major rail line in Estonia connecting the capital city Tallinn with the university city of Tartu, serving as one of the country's primary passenger and freight corridors.
  • C. Riga–Tukums railway
    The Riga–Tukums railway is a key rail line in Latvia linking the capital Riga with the town of Tukums and serving as an important regional passenger and freight route.
  • D. Riga–Jelgava railway
    The Riga–Jelgava railway is a key rail line in Latvia that links the capital city Riga with the nearby city of Jelgava, serving both passenger and freight traffic.
  • E. Riga–Daugavpils railway
    The Riga–Daugavpils railway is a major rail line in Latvia that links the capital Riga with the country’s second-largest city, Daugavpils, serving as an important route for both passenger and freight transport.
  • 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_69ca841ffe208190aa7bcffbef2f8379 completed March 30, 2026, 2:09 p.m.
NER Named-entity recognition batch_69cd078a045c8190b2c4d1ec64b932ad completed April 1, 2026, 11:54 a.m.
NED1 Entity disambiguation (via context triple) batch_69d0c750723c8190b874aa238d01d658 completed April 4, 2026, 8:09 a.m.
NEDg Description generation batch_69d0c8a7190c819097e71c15f7924268 completed April 4, 2026, 8:15 a.m.
NED2 Entity disambiguation (via description) batch_69d0c9e7e7d08190bddc6786f0fcea9e completed April 4, 2026, 8:20 a.m.
Created at: March 30, 2026, 7:34 p.m.