Triple

T16029288
Position Surface form Disambiguated ID Type / Status
Subject Helsinki Central railway station E388801 entity
Predicate railwayLine P848 FINISHED
Object Helsinki–Turku railway
The Helsinki–Turku railway is a major Finnish rail line connecting the capital Helsinki with the southwestern city of Turku, serving as one of the country’s primary passenger and freight corridors.
 E1192662 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: Helsinki–Turku railway | Statement: [Helsinki Central railway station, railwayLine, Helsinki–Turku railway]

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: Helsinki–Turku railway
Context triple: [Helsinki Central railway station, railwayLine, Helsinki–Turku railway]
  • A. 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.
  • B. 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.
  • C. Helsinki–Lahti line
    The Helsinki–Lahti line is a major Finnish railway route that serves as the country’s primary high-speed corridor between the capital region and eastern Finland.
  • D. Tampere–Seinäjoki railway line
    The Tampere–Seinäjoki railway line is a major rail route in western Finland that connects the city of Tampere with Seinäjoki, serving both passenger and freight traffic.
  • E. 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.
  • 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: Helsinki–Turku railway
Target entity description: The Helsinki–Turku railway is a major Finnish rail line connecting the capital Helsinki with the southwestern city of Turku, serving as one of the country’s primary passenger and freight corridors.
  • A. 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.
  • B. 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.
  • C. Helsinki–Lahti line
    The Helsinki–Lahti line is a major Finnish railway route that serves as the country’s primary high-speed corridor between the capital region and eastern Finland.
  • D. Tampere–Seinäjoki railway line
    The Tampere–Seinäjoki railway line is a major rail route in western Finland that connects the city of Tampere with Seinäjoki, serving both passenger and freight traffic.
  • E. 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.
  • 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: Helsinki–Turku railway
Triple: [Helsinki Central railway station, railwayLine, Helsinki–Turku railway]
Generated description
The Helsinki–Turku railway is a major Finnish rail line connecting the capital Helsinki with the southwestern city of Turku, serving as one of the country’s primary passenger and freight corridors.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d86dada3808190825d5f80d72fbe88 elicitation completed
NER batch_69e1832a56ec8190a47fd2cf83a42fd4 ner completed
NED1 batch_69ffe47280448190923a36e9a41ce7bc ned_source_triple completed
NED2 batch_69ffe572be388190bb492b6f554ec808 ned_description completed
NEDg batch_69ffe517c8f081908a1275d0adf3053d nedg completed
Created at: April 10, 2026, 4:56 a.m.