Triple

T6154339
Position Surface form Disambiguated ID Type / Status
Subject Tokyu Corporation E137281 entity
Predicate operatesRailwayLine P15252 FINISHED
Object Tamachi Line
The Tamachi Line is a Japanese railway line operated by Tokyu Corporation, serving as a local commuter route within the Tokyo metropolitan area.
 E800271 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: Tamachi Line | Statement: [Tokyu Corporation, operatesRailwayLine, Tamachi Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tamachi Line
Context triple: [Tokyu Corporation, operatesRailwayLine, Tamachi Line]
  • A. 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.
  • B. Ikegami Line
    The Ikegami Line is a commuter railway line in Tokyo, Japan, serving local neighborhoods with frequent urban transit as part of the Tokyu network.
  • C. 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.
  • D. Negishi Line
    The Negishi Line is a railway line in the Greater Tokyo area of Japan operated by JR East, connecting Yokohama with Ōfuna and serving as part of the Keihin-Tōhoku/Negishi through service corridor.
  • E. Imazatosuji Line
    The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
  • 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: Tamachi Line
Triple: [Tokyu Corporation, operatesRailwayLine, Tamachi Line]
Generated description
The Tamachi Line is a Japanese railway line operated by Tokyu Corporation, serving as a local commuter route within the Tokyo metropolitan area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Tamachi Line
Target entity description: The Tamachi Line is a Japanese railway line operated by Tokyu Corporation, serving as a local commuter route within the Tokyo metropolitan area.
  • A. 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.
  • B. Ikegami Line
    The Ikegami Line is a commuter railway line in Tokyo, Japan, serving local neighborhoods with frequent urban transit as part of the Tokyu network.
  • C. 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.
  • D. Negishi Line
    The Negishi Line is a railway line in the Greater Tokyo area of Japan operated by JR East, connecting Yokohama with Ōfuna and serving as part of the Keihin-Tōhoku/Negishi through service corridor.
  • E. Imazatosuji Line
    The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
  • 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_69c008a45d008190832a9e19f5d63406 completed March 22, 2026, 3:20 p.m.
NER Named-entity recognition batch_69c060fca4cc8190bf95231cd2a594c1 completed March 22, 2026, 9:37 p.m.
NED1 Entity disambiguation (via context triple) batch_69d121b5cc1c819093109b22acacf98f completed April 4, 2026, 2:35 p.m.
NEDg Description generation batch_69d1231adb4481908fac11cae099d0de completed April 4, 2026, 2:41 p.m.
NED2 Entity disambiguation (via description) batch_69d123fcc8f48190838abd08a4af0a63 completed April 4, 2026, 2:45 p.m.
Created at: March 22, 2026, 4:17 p.m.