Triple

T12971342

Position	Surface form	Disambiguated ID	Type / Status
Subject	Nishiarai	`E321402`	entity
Predicate	servedByRailLine	`P1293`	FINISHED
Object	Tobu Daishi Line	`—`	NE NERFINISHED

How this triple was built (3 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 Daishi Line | Statement: [Nishiarai, servedByRailLine, Tobu Daishi Line]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Tobu Daishi Line
Context triple: [Nishiarai, servedByRailLine, Tobu Daishi Line]

A. Tobu Tojo Line
The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
B. Tobu Isesaki Line
The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
C. Seibu Kokubunji Line
The Seibu Kokubunji Line is a commuter railway line in western Tokyo operated by Seibu Railway, connecting residential suburbs with major transit hubs.
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. 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.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Tobu Daishi Line
Target entity description: The Tobu Daishi Line is a short commuter railway line in Tokyo, Japan, operated by Tobu Railway and known for serving the area around the famous Nishiarai Daishi temple.

A. Tobu Tojo Line
The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
B. Tobu Isesaki Line
The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
C. Seibu Kokubunji Line
The Seibu Kokubunji Line is a commuter railway line in western Tokyo operated by Seibu Railway, connecting residential suburbs with major transit hubs.
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. 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.
F. None of above. chosen

Provenance (2 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_69d80763bd6c819094437da5b20b01d2`	completed	April 9, 2026, 8:09 p.m.
NER	Named-entity recognition	`batch_69d97e418d548190be1c73db76cb3aa8`	completed	April 10, 2026, 10:48 p.m.

Created at: April 9, 2026, 8:35 p.m.