Triple

T11359874
Position Surface form Disambiguated ID Type / Status
Subject Helsinki–Riihimäki railway E269056 entity
Predicate connectedTo P37 FINISHED
Object Riihimäki–Tampere railway
The Riihimäki–Tampere railway is a major rail line in southern Finland that forms part of the main route between Helsinki and the city of Tampere, serving both passenger and freight traffic.
 E921316 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: Riihimäki–Tampere railway | Statement: [Helsinki–Riihimäki railway, connectedTo, Riihimäki–Tampere 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: Riihimäki–Tampere railway
Context triple: [Helsinki–Riihimäki railway, connectedTo, Riihimäki–Tampere 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–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. Helsinki–Oulu route
    The Helsinki–Oulu route is a major Finnish railway corridor connecting the capital region in the south with the northern city of Oulu, serving numerous intermediate cities and towns along the way.
  • E. Haparanda Line
    The Haparanda Line is a railway route in northern Sweden that connects to Finland, serving as an important cross-border transport link.
  • 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: Riihimäki–Tampere railway
Target entity description: The Riihimäki–Tampere railway is a major rail line in southern Finland that forms part of the main route between Helsinki and the city of Tampere, serving both passenger and freight 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–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. Helsinki–Oulu route
    The Helsinki–Oulu route is a major Finnish railway corridor connecting the capital region in the south with the northern city of Oulu, serving numerous intermediate cities and towns along the way.
  • E. Haparanda Line
    The Haparanda Line is a railway route in northern Sweden that connects to Finland, serving as an important cross-border transport link.
  • 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: Riihimäki–Tampere railway
Triple: [Helsinki–Riihimäki railway, connectedTo, Riihimäki–Tampere railway]
Generated description
The Riihimäki–Tampere railway is a major rail line in southern Finland that forms part of the main route between Helsinki and the city of Tampere, serving both passenger and freight traffic.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d6aacbe18081909e5fadb50082dd96 elicitation completed
NER batch_69d7ea42fe608190b9c71dd63f8780f3 ner completed
NED1 batch_69e556542ecc8190a8109c17944598ab ned_source_triple completed
NED2 batch_69e569f0e6948190b285ca84aca03771 ned_description completed
NEDg batch_69e562bb085c8190942766d12d838798 nedg completed
Created at: April 8, 2026, 9:33 p.m.