Triple

T6305465
Position Surface form Disambiguated ID Type / Status
Subject Omiya Station E141363 entity
Predicate servedByLine P1293 FINISHED
Object Tobu Urban Park Line
Tobu Urban Park Line is a Japanese private railway line operated by Tobu Railway that runs through the northern suburbs of the Greater Tokyo area, connecting key commuter hubs.
E848500 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: Tobu Urban Park Line | Statement: [Omiya Station, servedByLine, Tobu Urban Park Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Tobu Urban Park Line
Context triple: [Omiya Station, servedByLine, Tobu Urban Park Line]
  • A. Tobu Nikko Line
    The Tobu Nikko Line is a private railway line in Japan operated by Tobu Railway that connects the Tokyo area with the historic and scenic Nikko region in Tochigi Prefecture.
  • B. Tokyu Den-en-toshi Line
    Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
  • C. Tokyu Meguro Line
    The Tokyu Meguro Line is a commuter railway line in Tokyo and Kanagawa operated by Tokyu Corporation, linking central Tokyo with its southwestern suburbs and offering through services onto various subway and other private railway lines.
  • D. Seibu Toshima Line
    The Seibu Toshima Line is a short commuter railway line in Tokyo, Japan, operated by Seibu Railway and connecting Nerima and Toshimaen in the city’s northwest.
  • E. Toei Mita Line
    The Toei Mita Line is a Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, running north–south through the city and connecting central Tokyo with its northern suburbs.
  • 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: Tobu Urban Park Line
Triple: [Omiya Station, servedByLine, Tobu Urban Park Line]
Generated description
Tobu Urban Park Line is a Japanese private railway line operated by Tobu Railway that runs through the northern suburbs of the Greater Tokyo area, connecting key commuter hubs.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Tobu Urban Park Line
Target entity description: Tobu Urban Park Line is a Japanese private railway line operated by Tobu Railway that runs through the northern suburbs of the Greater Tokyo area, connecting key commuter hubs.
  • A. Tobu Nikko Line
    The Tobu Nikko Line is a private railway line in Japan operated by Tobu Railway that connects the Tokyo area with the historic and scenic Nikko region in Tochigi Prefecture.
  • B. Tokyu Den-en-toshi Line
    Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
  • C. Tokyu Meguro Line
    The Tokyu Meguro Line is a commuter railway line in Tokyo and Kanagawa operated by Tokyu Corporation, linking central Tokyo with its southwestern suburbs and offering through services onto various subway and other private railway lines.
  • D. Seibu Toshima Line
    The Seibu Toshima Line is a short commuter railway line in Tokyo, Japan, operated by Seibu Railway and connecting Nerima and Toshimaen in the city’s northwest.
  • E. Toei Mita Line
    The Toei Mita Line is a Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, running north–south through the city and connecting central Tokyo with its northern suburbs.
  • 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_69c008cf0ad4819095def81e2bd42f9f completed March 22, 2026, 3:20 p.m.
NER Named-entity recognition batch_69c06479acec819090306a155a03b774 completed March 22, 2026, 9:51 p.m.
NED1 Entity disambiguation (via context triple) batch_69d369226a28819088b14cbc4cb78e57 completed April 6, 2026, 8:04 a.m.
NEDg Description generation batch_69d36a006da48190b98b325b7dc24caa completed April 6, 2026, 8:08 a.m.
NED2 Entity disambiguation (via description) batch_69d36a5343588190923c3fe62368cd0a completed April 6, 2026, 8:09 a.m.
Created at: March 22, 2026, 4:28 p.m.