Triple

T11406081
Position Surface form Disambiguated ID Type / Status
Subject JR Hokkaido E270240 entity
Predicate operatesLine P15252 FINISHED
Object Rumoi Main Line (partially, before closures)
The Rumoi Main Line was a regional railway route in Hokkaido, Japan, serving coastal communities along the Sea of Japan before sections were progressively closed.
 E923926 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: Rumoi Main Line (partially, before closures) | Statement: [JR Hokkaido, operatesLine, Rumoi Main Line (partially, before closures)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Rumoi Main Line (partially, before closures)
Context triple: [JR Hokkaido, operatesLine, Rumoi Main Line (partially, before closures)]
  • A. Hidaka Main Line (partially discontinued)
    The Hidaka Main Line is a railway line in Hokkaido, Japan, historically serving coastal communities including Shinhidaka, parts of which have been closed due to storm damage and declining ridership.
  • B. Sanin Main Line (partial)
    The Sanin Main Line is a major railway route in western Japan that runs along the Sea of Japan coast, connecting numerous cities and rural areas across the San'in region.
  • C. Muroran Main Line
    The Muroran Main Line is a major railway line in Hokkaido, Japan, connecting key cities and industrial areas along the region’s southern coast.
  • D. Ohmi Railway Main Line
    The Ohmi Railway Main Line is a regional rail line in Shiga Prefecture, Japan, operated by Ohmi Railway and serving communities including the city of Omihachiman.
  • E. Shinano Railway Line
    The Shinano Railway Line is a regional rail line in Nagano Prefecture, Japan, operated by Shinano Railway and serving as a key local corridor through the area.
  • 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: Rumoi Main Line (partially, before closures)
Triple: [JR Hokkaido, operatesLine, Rumoi Main Line (partially, before closures)]
Generated description
The Rumoi Main Line was a regional railway route in Hokkaido, Japan, serving coastal communities along the Sea of Japan before sections were progressively closed.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Rumoi Main Line (partially, before closures)
Target entity description: The Rumoi Main Line was a regional railway route in Hokkaido, Japan, serving coastal communities along the Sea of Japan before sections were progressively closed.
  • A. Hidaka Main Line (partially discontinued)
    The Hidaka Main Line is a railway line in Hokkaido, Japan, historically serving coastal communities including Shinhidaka, parts of which have been closed due to storm damage and declining ridership.
  • B. Sanin Main Line (partial)
    The Sanin Main Line is a major railway route in western Japan that runs along the Sea of Japan coast, connecting numerous cities and rural areas across the San'in region.
  • C. Muroran Main Line
    The Muroran Main Line is a major railway line in Hokkaido, Japan, connecting key cities and industrial areas along the region’s southern coast.
  • D. Ohmi Railway Main Line
    The Ohmi Railway Main Line is a regional rail line in Shiga Prefecture, Japan, operated by Ohmi Railway and serving communities including the city of Omihachiman.
  • E. Shinano Railway Line
    The Shinano Railway Line is a regional rail line in Nagano Prefecture, Japan, operated by Shinano Railway and serving as a key local corridor through the area.
  • 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_69d6aaddeaa8819088b30ef7b50598c9 completed April 8, 2026, 7:22 p.m.
NER Named-entity recognition batch_69d8014c820c81908538ba4a08e13230 completed April 9, 2026, 7:43 p.m.
NED1 Entity disambiguation (via context triple) batch_69e58d56608481908dbb19daa2abfc0a completed April 20, 2026, 2:20 a.m.
NEDg Description generation batch_69e59777b1208190a33a50da286535ee completed April 20, 2026, 3:03 a.m.
NED2 Entity disambiguation (via description) batch_69e5a3cf9d388190944340af484b3a54 completed April 20, 2026, 3:55 a.m.
Created at: April 8, 2026, 9:34 p.m.