Triple

T16029285
Position Surface form Disambiguated ID Type / Status
Subject Helsinki Central railway station E388801 entity
Predicate railwayLine P848 FINISHED
Object Coastal Railway (Finland)
Coastal Railway (Finland) is a major Finnish rail line running along the country’s southern coast, connecting Helsinki with key western cities such as Turku.
 E1188831 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Coastal Railway (Finland) | Statement: [Helsinki Central railway station, railwayLine, Coastal Railway (Finland)]

Disambiguation candidates (2 decisions)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Coastal Railway (Finland)
Context triple: [Helsinki Central railway station, railwayLine, Coastal Railway (Finland)]
  • A. Helsinki–Riihimäki railway
    The Helsinki–Riihimäki railway is a major Finnish rail line forming part of the main route north from Helsinki, serving numerous commuter and long-distance trains.
  • B. 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.
  • C. Oulu–Seinäjoki railway
    The Oulu–Seinäjoki railway is a major rail line in western Finland that connects the northern city of Oulu with Seinäjoki, serving as an important route for both passenger and freight traffic.
  • D. Jyväskylä–Äänekoski railway
    The Jyväskylä–Äänekoski railway is a Finnish rail line connecting the city of Jyväskylä with the town of Äänekoski, serving both passenger and freight traffic in Central Finland.
  • E. Haapamäki–Jyväskylä railway
    The Haapamäki–Jyväskylä railway is a Finnish rail line in Central Finland that connects the town of Haapamäki with the city of Jyväskylä, serving both passenger and freight traffic.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Coastal Railway (Finland)
Target entity description: Coastal Railway (Finland) is a major Finnish rail line running along the country’s southern coast, connecting Helsinki with key western cities such as Turku.
  • A. Helsinki–Riihimäki railway
    The Helsinki–Riihimäki railway is a major Finnish rail line forming part of the main route north from Helsinki, serving numerous commuter and long-distance trains.
  • B. 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.
  • C. Oulu–Seinäjoki railway
    The Oulu–Seinäjoki railway is a major rail line in western Finland that connects the northern city of Oulu with Seinäjoki, serving as an important route for both passenger and freight traffic.
  • D. Jyväskylä–Äänekoski railway
    The Jyväskylä–Äänekoski railway is a Finnish rail line connecting the city of Jyväskylä with the town of Äänekoski, serving both passenger and freight traffic in Central Finland.
  • E. Haapamäki–Jyväskylä railway
    The Haapamäki–Jyväskylä railway is a Finnish rail line in Central Finland that connects the town of Haapamäki with the city of Jyväskylä, serving both passenger and freight traffic.
  • F. None of above. chosen

How the object was described

The object's one-sentence description was generated by prompting gpt-5.1 with the object name and this triple as context.

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: Coastal Railway (Finland)
Triple: [Helsinki Central railway station, railwayLine, Coastal Railway (Finland)]
Generated description
Coastal Railway (Finland) is a major Finnish rail line running along the country’s southern coast, connecting Helsinki with key western cities such as Turku.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d86dada3808190825d5f80d72fbe88 elicitation completed
NER batch_69e1832a56ec8190a47fd2cf83a42fd4 ner completed
NED1 batch_69ffcf35ae808190aeb154a273c32a70 ned_source_triple completed
NED2 batch_69ffd09e128c819081e92a479a4a24f9 ned_description completed
NEDg batch_69ffd0384804819080f63b86d5114950 nedg completed
Created at: April 10, 2026, 4:56 a.m.