Triple

T4225958
Position Surface form Disambiguated ID Type / Status
Subject Obihiro E94458 entity
Predicate railwayLine P848 FINISHED
Object Nemuro Main Line
The Nemuro Main Line is a major railway line in Hokkaido, Japan, operated by JR Hokkaido and connecting inland cities such as Obihiro with eastern Hokkaido.
 E628785 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: Nemuro Main Line | Statement: [Obihiro, railwayLine, Nemuro Main Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Nemuro Main Line
Context triple: [Obihiro, railwayLine, Nemuro Main Line]
  • A. Hakodate Main Line
    The Hakodate Main Line is a major railway corridor in Hokkaido, Japan, connecting key cities including Hakodate and Sapporo and serving as one of the region’s primary transport routes.
  • B. Hokkaido Main Line
    The Hokkaido Main Line is a major railway corridor in Hokkaido, Japan, connecting key cities and serving as one of the region’s primary transportation routes.
  • C. Iida Line
    The Iida Line is a regional railway line in central Japan operated by JR Central, running through mountainous areas of Aichi, Nagano, and Shizuoka Prefectures and connecting various local communities.
  • D. Tōhoku Main Line
    The Tōhoku Main Line is a major Japanese railway corridor running through the Tōhoku region, historically serving as the primary conventional rail route between Tokyo and northern Honshu.
  • E. Keihin-Tōhoku Line
    The Keihin-Tōhoku Line is a major JR East commuter rail line in the Greater Tokyo area that runs north–south through Tokyo, connecting Saitama and Kanagawa prefectures.
  • 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: Nemuro Main Line
Triple: [Obihiro, railwayLine, Nemuro Main Line]
Generated description
The Nemuro Main Line is a major railway line in Hokkaido, Japan, operated by JR Hokkaido and connecting inland cities such as Obihiro with eastern Hokkaido.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Nemuro Main Line
Target entity description: The Nemuro Main Line is a major railway line in Hokkaido, Japan, operated by JR Hokkaido and connecting inland cities such as Obihiro with eastern Hokkaido.
  • A. Hakodate Main Line
    The Hakodate Main Line is a major railway corridor in Hokkaido, Japan, connecting key cities including Hakodate and Sapporo and serving as one of the region’s primary transport routes.
  • B. Hokkaido Main Line
    The Hokkaido Main Line is a major railway corridor in Hokkaido, Japan, connecting key cities and serving as one of the region’s primary transportation routes.
  • C. Iida Line
    The Iida Line is a regional railway line in central Japan operated by JR Central, running through mountainous areas of Aichi, Nagano, and Shizuoka Prefectures and connecting various local communities.
  • D. Tōhoku Main Line
    The Tōhoku Main Line is a major Japanese railway corridor running through the Tōhoku region, historically serving as the primary conventional rail route between Tokyo and northern Honshu.
  • E. Keihin-Tōhoku Line
    The Keihin-Tōhoku Line is a major JR East commuter rail line in the Greater Tokyo area that runs north–south through Tokyo, connecting Saitama and Kanagawa prefectures.
  • 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_69b3453700a08190ae88792e3dc63207 completed March 12, 2026, 10:59 p.m.
NER Named-entity recognition batch_69b34e4ed34c819081d1479ce87cd78c completed March 12, 2026, 11:37 p.m.
NED1 Entity disambiguation (via context triple) batch_69c750f84be081908fa4738e09cb884e completed March 28, 2026, 3:54 a.m.
NEDg Description generation batch_69c7524d677c81909531ba9bb46f2632 completed March 28, 2026, 4 a.m.
NED2 Entity disambiguation (via description) batch_69c752bef2808190843f3cad53aa5702 completed March 28, 2026, 4:02 a.m.
Created at: March 12, 2026, 11:04 p.m.