Triple

T9275061
Position Surface form Disambiguated ID Type / Status
Subject Tartu railway station E222924 entity
Predicate railwayLine P848 FINISHED
Object 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.
 E789708 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–Valga railway | Statement: [Tartu railway station, railwayLine, Tartu–Valga railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tartu–Valga railway
Context triple: [Tartu railway station, railwayLine, Tartu–Valga railway]
  • A. 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.
  • B. 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.
  • C. 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.
  • D. 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.
  • E. Riga–Aizkraukle railway
    The Riga–Aizkraukle railway is a key Latvian rail line linking the capital Riga with the town of Aizkraukle and forming part of the country’s main eastbound transport corridor.
  • 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–Valga railway
Triple: [Tartu railway station, railwayLine, Tartu–Valga railway]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Tartu–Valga railway
Target entity description: 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.
  • A. 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.
  • B. 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.
  • C. 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.
  • D. 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.
  • E. Riga–Aizkraukle railway
    The Riga–Aizkraukle railway is a key Latvian rail line linking the capital Riga with the town of Aizkraukle and forming part of the country’s main eastbound transport corridor.
  • 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_69d0b1f57db881908a42ad5b042d0872 completed April 4, 2026, 6:38 a.m.
NEDg Description generation batch_69d0b3d0e4608190bc0e15c1fade41de completed April 4, 2026, 6:46 a.m.
NED2 Entity disambiguation (via description) batch_69d0b42d75908190b37bd194af43b89d completed April 4, 2026, 6:48 a.m.
Created at: March 30, 2026, 7:34 p.m.