Triple

T16029290
Position Surface form Disambiguated ID Type / Status
Subject Helsinki Central railway station E388801 entity
Predicate railwayLine P848 FINISHED
Object Helsinki–Karjaa railway
The Helsinki–Karjaa railway is a key rail line in southern Finland that connects the capital city Helsinki with the town of Karjaa, serving both commuter and regional traffic.
 E1196257 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–Karjaa railway | Statement: [Helsinki Central railway station, railwayLine, Helsinki–Karjaa 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–Karjaa railway
Context triple: [Helsinki Central railway station, railwayLine, Helsinki–Karjaa railway]
  • 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. 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.
  • 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: Helsinki–Karjaa railway
Target entity description: The Helsinki–Karjaa railway is a key rail line in southern Finland that connects the capital city Helsinki with the town of Karjaa, serving both commuter and regional traffic.
  • 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. 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.
  • 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: Helsinki–Karjaa railway
Triple: [Helsinki Central railway station, railwayLine, Helsinki–Karjaa railway]
Generated description
The Helsinki–Karjaa railway is a key rail line in southern Finland that connects the capital city Helsinki with the town of Karjaa, serving both commuter and regional traffic.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d86dada3808190825d5f80d72fbe88 elicitation completed
NER batch_69e1832a56ec8190a47fd2cf83a42fd4 ner completed
NED1 batch_69fff295a0e08190b80d363f0a48094a ned_source_triple completed
NED2 batch_69fff3f2760c8190a58fedc2798614ae ned_description completed
NEDg batch_69fff35ded288190b4d261358f1661cb nedg completed
Created at: April 10, 2026, 4:56 a.m.