Triple
T20260570
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Sendai Station |
E498821
|
entity |
| Predicate | railwayCompany |
P5620
|
FINISHED |
| Object | Sendai Subway |
—
|
NE NERFINISHED |
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 Subway | Statement: [Sendai Station, railwayCompany, Sendai Subway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Sendai Subway Context triple: [Sendai Station, railwayCompany, Sendai Subway]
-
A.
Sendai Subway
chosen
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.
-
B.
Toei Subway
Toei Subway is one of Tokyo's two main subway networks, operated by the Tokyo Metropolitan Bureau of Transportation and serving numerous urban and suburban areas across the city.
-
C.
Sendai Subway Tōzai Line
The Sendai Subway Tōzai Line is an east–west rapid transit line in Sendai, Japan, connecting key districts across the city as part of its urban subway network.
-
D.
Tenri Station
Tenri Station is a railway station in Tenri, Nara Prefecture, Japan, serving as a local transit hub on regional rail lines.
-
E.
Sapporo Municipal Subway
Sapporo Municipal Subway is the rapid transit system serving the city of Sapporo in Hokkaido, Japan, providing urban rail transportation across several key lines and stations.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
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_69da6275fa6c8190952924930adee150 |
completed | April 11, 2026, 3:02 p.m. |
| NER | Named-entity recognition | batch_69e674c90d00819082f68822635ee86a |
completed | April 20, 2026, 6:47 p.m. |
Created at: April 11, 2026, 11:41 p.m.