Triple
T11831824
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Sendai Subway |
E281409
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object | Sendai City Transportation Bureau |
E950154
|
NE FINISHED |
How this triple was built (2 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: Sendai City Transportation Bureau | Statement: [Sendai Subway, operator, Sendai City Transportation Bureau]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Sendai City Transportation Bureau Context triple: [Sendai Subway, operator, Sendai City Transportation Bureau]
-
A.
Sendai City Transportation Bureau
chosen
The Sendai City Transportation Bureau is the municipal agency responsible for operating and managing public transit services, including the subway system, in Sendai, Japan.
-
B.
Sendai Subway
Sendai Subway is an urban rapid transit system serving the city of Sendai in Japan, providing key north–south and east–west rail connections across the metropolitan area.
-
C.
Sapporo City Transportation Bureau
The Sapporo City Transportation Bureau is the municipal agency responsible for operating and managing public transit services, including subways and streetcars, in Sapporo, Japan.
-
D.
Sendai Station
Sendai Station is the main railway hub of Sendai, Japan, serving as a major stop for Shinkansen high-speed trains and numerous local and regional lines.
-
E.
Sendai
Sendai is the largest city in Japan’s Tōhoku region, known for its lush greenery, historic sites, and status as a major economic and cultural center in northeastern Honshu.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d6ab276f8c8190b1966a0ef11349ac |
completed | April 8, 2026, 7:23 p.m. |
| NER | Named-entity recognition | batch_69d8a62c95988190a45dbaa7001c8846 |
completed | April 10, 2026, 7:26 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f2812007dc81908e56fd47b2a94836 |
completed | April 29, 2026, 10:07 p.m. |
Created at: April 8, 2026, 9:43 p.m.