Triple

T9275060
Position Surface form Disambiguated ID Type / Status
Subject Tartu railway station E222924 entity
Predicate railwayLine P848 FINISHED
Object 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.
 E787951 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: Tallinn–Tartu railway | Statement: [Tartu railway station, railwayLine, Tallinn–Tartu railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tallinn–Tartu railway
Context triple: [Tartu railway station, railwayLine, Tallinn–Tartu railway]
  • A. 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.
  • B. 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.
  • 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–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.
  • E. Helsinki–Tampere railway
    The Helsinki–Tampere railway is a major Finnish rail line connecting the capital Helsinki with the city of Tampere, serving as one of the country’s busiest passenger and freight corridors.
  • 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: Tallinn–Tartu railway
Triple: [Tartu railway station, railwayLine, Tallinn–Tartu railway]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Tallinn–Tartu railway
Target entity description: 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.
  • A. 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.
  • B. 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.
  • 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–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.
  • E. Helsinki–Tampere railway
    The Helsinki–Tampere railway is a major Finnish rail line connecting the capital Helsinki with the city of Tampere, serving as one of the country’s busiest passenger and freight corridors.
  • 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_69d09c3dd140819099fc0e95c4d48ba9 completed April 4, 2026, 5:06 a.m.
NEDg Description generation batch_69d09cf1f2f48190b53e062c3eb4565d completed April 4, 2026, 5:09 a.m.
NED2 Entity disambiguation (via description) batch_69d09d9739d48190ac3b240390f36c38 completed April 4, 2026, 5:11 a.m.
Created at: March 30, 2026, 7:34 p.m.