Triple

T7161798

Position	Surface form	Disambiguated ID	Type / Status
Subject	Tokyo Metro Tozai Line at Otemachi	`E166963`	entity
Predicate	connectsTo	`P845`	FINISHED
Object	Tokyo Metro Toei Mita Line at Otemachi Tokyo Metro Toei Mita Line at Otemachi is a subway line stop within Tokyo’s extensive urban rail network, serving the Otemachi business district and providing transfers to multiple intersecting Tokyo Metro lines.	`E651078`	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: Tokyo Metro Toei Mita Line at Otemachi | Statement: [Tokyo Metro Tozai Line at Otemachi, connectsTo, Tokyo Metro Toei Mita Line at Otemachi]

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

Target entity: Tokyo Metro Toei Mita Line at Otemachi
Context triple: [Tokyo Metro Tozai Line at Otemachi, connectsTo, Tokyo Metro Toei Mita Line at Otemachi]

A. Tokyo Metro Marunouchi Line at Otemachi
Tokyo Metro Marunouchi Line at Otemachi is a major subway line stop in central Tokyo that serves the busy Otemachi business district and offers extensive transfers to other Tokyo Metro lines.
B. Tokyo Metro Chiyoda Line at Otemachi
Tokyo Metro Chiyoda Line at Otemachi is a subway line platform and service point within Otemachi Station in central Tokyo, providing urban rail transit and transfers to multiple other Tokyo Metro lines.
C. Tokyo Metro Tozai Line at Otemachi
Tokyo Metro Tozai Line at Otemachi is a major Tokyo subway line stop located in the Otemachi business district, serving as a key transfer point within the city’s extensive metro network.
D. Tokyo Metro Hanzomon Line at Otemachi
Tokyo Metro Hanzomon Line at Otemachi is a major subway line stop in central Tokyo that serves the Otemachi business district and provides key transfers to multiple other Tokyo Metro lines.
E. Tokyo Metro Chiyoda Line at Omotesando
The Tokyo Metro Chiyoda Line at Omotesando is a major subway line stop in central Tokyo that serves the fashionable Omotesando district and connects with other key metro routes.
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: Tokyo Metro Toei Mita Line at Otemachi
Triple: [Tokyo Metro Tozai Line at Otemachi, connectsTo, Tokyo Metro Toei Mita Line at Otemachi]

Generated description

Tokyo Metro Toei Mita Line at Otemachi is a subway line stop within Tokyo’s extensive urban rail network, serving the Otemachi business district and providing transfers to multiple intersecting Tokyo Metro lines.

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

Target entity: Tokyo Metro Toei Mita Line at Otemachi
Target entity description: Tokyo Metro Toei Mita Line at Otemachi is a subway line stop within Tokyo’s extensive urban rail network, serving the Otemachi business district and providing transfers to multiple intersecting Tokyo Metro lines.

A. Tokyo Metro Marunouchi Line at Otemachi
Tokyo Metro Marunouchi Line at Otemachi is a major subway line stop in central Tokyo that serves the busy Otemachi business district and offers extensive transfers to other Tokyo Metro lines.
B. Tokyo Metro Chiyoda Line at Otemachi
Tokyo Metro Chiyoda Line at Otemachi is a subway line platform and service point within Otemachi Station in central Tokyo, providing urban rail transit and transfers to multiple other Tokyo Metro lines.
C. Tokyo Metro Tozai Line at Otemachi
Tokyo Metro Tozai Line at Otemachi is a major Tokyo subway line stop located in the Otemachi business district, serving as a key transfer point within the city’s extensive metro network.
D. Tokyo Metro Hanzomon Line at Otemachi
Tokyo Metro Hanzomon Line at Otemachi is a major subway line stop in central Tokyo that serves the Otemachi business district and provides key transfers to multiple other Tokyo Metro lines.
E. Tokyo Metro Chiyoda Line at Omotesando
The Tokyo Metro Chiyoda Line at Omotesando is a major subway line stop in central Tokyo that serves the fashionable Omotesando district and connects with other key metro routes.
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_69c68887a5cc8190bec0ea96227164f7`	completed	March 27, 2026, 1:39 p.m.
NER	Named-entity recognition	`batch_69c6e82e4b248190ad3c3863cb93971e`	completed	March 27, 2026, 8:27 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69c7cbdab96c81909b9cfa10973fbf23`	completed	March 28, 2026, 12:38 p.m.
NEDg	Description generation	`batch_69c7cc86efa481909b0d6cb04755efde`	completed	March 28, 2026, 12:41 p.m.
NED2	Entity disambiguation (via description)	`batch_69c7cd1d5ac08190bb085530c647a54c`	completed	March 28, 2026, 12:44 p.m.

Created at: March 27, 2026, 2:47 p.m.