Triple

T11221116
Position Surface form Disambiguated ID Type / Status
Subject Ōu Main Line E265563 entity
Predicate lineNumber P1864 FINISHED
Object Ōu Line
The Ōu Line is a major railway line in Japan that runs through the Tōhoku region, connecting Fukushima with Aomori along the Sea of Japan side.
 E1176904 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: Ōu Line | Statement: [Ōu Main Line, lineNumber, Ōu Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Ōu Line
Context triple: [Ōu Main Line, lineNumber, Ōu Line]
  • A. Yamatoji Line
    The Yamatoji Line is a railway line in Japan operated by JR West that connects Osaka with Nara, serving as a key commuter and intercity route in the Kansai region.
  • B. Ryomo Line
    The Ryomo Line is a regional railway line in Japan operated by JR East that connects Maebashi and Oyama, serving the northern Kanto region.
  • C. Oimachi Line
    The Oimachi Line is a commuter railway line in Tokyo, Japan, forming part of the Tokyu network and connecting central Tokyo with its southwestern suburbs.
  • D. Den-en-toshi Line
    The Den-en-toshi Line is a major commuter railway line in the Greater Tokyo area that connects central Tokyo with suburban residential districts.
  • E. Sakaisuji Line
    The Sakaisuji Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and connecting key districts through north–south underground service.
  • 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: Ōu Line
Triple: [Ōu Main Line, lineNumber, Ōu Line]
Generated description
The Ōu Line is a major railway line in Japan that runs through the Tōhoku region, connecting Fukushima with Aomori along the Sea of Japan side.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Ōu Line
Target entity description: The Ōu Line is a major railway line in Japan that runs through the Tōhoku region, connecting Fukushima with Aomori along the Sea of Japan side.
  • A. Yamatoji Line
    The Yamatoji Line is a railway line in Japan operated by JR West that connects Osaka with Nara, serving as a key commuter and intercity route in the Kansai region.
  • B. Ryomo Line
    The Ryomo Line is a regional railway line in Japan operated by JR East that connects Maebashi and Oyama, serving the northern Kanto region.
  • C. Oimachi Line
    The Oimachi Line is a commuter railway line in Tokyo, Japan, forming part of the Tokyu network and connecting central Tokyo with its southwestern suburbs.
  • D. Den-en-toshi Line
    The Den-en-toshi Line is a major commuter railway line in the Greater Tokyo area that connects central Tokyo with suburban residential districts.
  • E. Sakaisuji Line
    The Sakaisuji Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and connecting key districts through north–south underground service.
  • 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_69d6aac59460819089b9848b27f57848 completed April 8, 2026, 7:21 p.m.
NER Named-entity recognition batch_69d7e8eb84c48190b4f3bede254afde2 completed April 9, 2026, 5:59 p.m.
NED1 Entity disambiguation (via context triple) batch_69ff90815b64819082715292f6088c74 completed May 9, 2026, 7:52 p.m.
NEDg Description generation batch_69ff93239ed881909954ccceb63f16fd completed May 9, 2026, 8:03 p.m.
NED2 Entity disambiguation (via description) batch_69ff93ed15ec8190b9361f7ad4c7e447 completed May 9, 2026, 8:07 p.m.
Created at: April 8, 2026, 9:30 p.m.