Triple

T11161486

Position	Surface form	Disambiguated ID	Type / Status
Subject	Tokyo Metro Marunouchi Line	`E264046`	entity
Predicate	terminus	`P388`	FINISHED
Object	Ogikubo Station	`—`	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: Ogikubo Station | Statement: [Tokyo Metro Marunouchi Line, terminus, Ogikubo Station]

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

Target entity: Ogikubo Station
Context triple: [Tokyo Metro Marunouchi Line, terminus, Ogikubo Station]

A. Ichigaya Station
Ichigaya Station is a major railway and subway hub in central Tokyo’s Chiyoda ward, serving multiple lines and providing access to nearby government offices, universities, and the Ichigaya district.
B. Gokurakubashi Station
Gokurakubashi Station is a railway station in Kōya, Wakayama Prefecture, Japan, serving as the gateway terminal for visitors traveling by rail to the sacred Mount Kōya temple complex.
C. Shiyakusho Station
Shiyakusho Station is a subway station in Nagoya, Japan, serving the city hall area and providing convenient access to Nagoya Castle.
D. Otsuka Station
Otsuka Station is a railway station in Tokyo, Japan, served by JR East and known for its location on the busy Yamanote Line loop.
E. Oimachi Station
Oimachi Station is a major railway hub in Tokyo’s Shinagawa ward, serving multiple train and subway lines and connecting local neighborhoods with central and suburban areas of the city.
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: Ogikubo Station
Target entity description: Ogikubo Station is a major railway and subway hub in Suginami, Tokyo, serving as an interchange between JR East’s Chūō Line and the Tokyo Metro network.

A. Ichigaya Station
Ichigaya Station is a major railway and subway hub in central Tokyo’s Chiyoda ward, serving multiple lines and providing access to nearby government offices, universities, and the Ichigaya district.
B. Gokurakubashi Station
Gokurakubashi Station is a railway station in Kōya, Wakayama Prefecture, Japan, serving as the gateway terminal for visitors traveling by rail to the sacred Mount Kōya temple complex.
C. Shiyakusho Station
Shiyakusho Station is a subway station in Nagoya, Japan, serving the city hall area and providing convenient access to Nagoya Castle.
D. Otsuka Station
Otsuka Station is a railway station in Tokyo, Japan, served by JR East and known for its location on the busy Yamanote Line loop.
E. Oimachi Station
Oimachi Station is a major railway hub in Tokyo’s Shinagawa ward, serving multiple train and subway lines and connecting local neighborhoods with central and suburban areas of the city.
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_69d6aa9ccddc8190868998c8b7beb060`	completed	April 8, 2026, 7:21 p.m.
NER	Named-entity recognition	`batch_69d7e8817a90819087820d5241c58851`	completed	April 9, 2026, 5:57 p.m.

Created at: April 8, 2026, 9:29 p.m.