Triple

T9725674

Position	Surface form	Disambiguated ID	Type / Status
Subject	Toranomon	`E235602`	entity
Predicate	servedByLine	`P1293`	FINISHED
Object	Tokyo Metro Chiyoda Line (nearby via Kasumigaseki) Tokyo Metro Chiyoda Line is a major Tokyo subway line running through central districts and key hubs such as Kasumigaseki, connecting residential areas with important business and government centers.	`E819448`	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 Chiyoda Line (nearby via Kasumigaseki) | Statement: [Toranomon, servedByLine, Tokyo Metro Chiyoda Line (nearby via Kasumigaseki)]

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

Target entity: Tokyo Metro Chiyoda Line (nearby via Kasumigaseki)
Context triple: [Toranomon, servedByLine, Tokyo Metro Chiyoda Line (nearby via Kasumigaseki)]

A. Tokyo Metro Hibiya Line (nearby via Kasumigaseki)
Tokyo Metro Hibiya Line is a major Tokyo subway line running through central districts such as Kasumigaseki, connecting key business, government, and commercial areas across the city.
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. Toei Mita Line at Otemachi
The Toei Mita Line at Otemachi is a major Tokyo subway line stop that serves as a key transfer point within the city’s extensive urban rail network.
D. 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.
E. 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.
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 Chiyoda Line (nearby via Kasumigaseki)
Triple: [Toranomon, servedByLine, Tokyo Metro Chiyoda Line (nearby via Kasumigaseki)]

Generated description

Tokyo Metro Chiyoda Line is a major Tokyo subway line running through central districts and key hubs such as Kasumigaseki, connecting residential areas with important business and government centers.

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

Target entity: Tokyo Metro Chiyoda Line (nearby via Kasumigaseki)
Target entity description: Tokyo Metro Chiyoda Line is a major Tokyo subway line running through central districts and key hubs such as Kasumigaseki, connecting residential areas with important business and government centers.

A. Tokyo Metro Hibiya Line (nearby via Kasumigaseki)
Tokyo Metro Hibiya Line is a major Tokyo subway line running through central districts such as Kasumigaseki, connecting key business, government, and commercial areas across the city.
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. Toei Mita Line at Otemachi
The Toei Mita Line at Otemachi is a major Tokyo subway line stop that serves as a key transfer point within the city’s extensive urban rail network.
D. 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.
E. 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.
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_69ca84d0fad481909cdd45aa77416c48`	completed	March 30, 2026, 2:12 p.m.
NER	Named-entity recognition	`batch_69cd9e7838448190a7b5b259765a0d95`	completed	April 1, 2026, 10:38 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69d1bcc45bfc81909b86d10598d9bd39`	completed	April 5, 2026, 1:37 a.m.
NEDg	Description generation	`batch_69d1bd42e3888190b13970710a9620d7`	completed	April 5, 2026, 1:39 a.m.
NED2	Entity disambiguation (via description)	`batch_69d1bdd5ec94819083edd1cb2c9598a0`	completed	April 5, 2026, 1:41 a.m.

Created at: March 30, 2026, 8:21 p.m.