Triple
T20489607
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Keikyū Main Line |
E502702
|
entity |
| Predicate | partOfNetwork |
P840
|
FINISHED |
| Object | Keikyu railway network |
—
|
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: Keikyu railway network | Statement: [Keikyū Main Line, partOfNetwork, Keikyu railway network]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Keikyu railway network Context triple: [Keikyū Main Line, partOfNetwork, Keikyu railway network]
-
A.
Kita-Osaka Kyuko Railway network
The Kita-Osaka Kyuko Railway network is a private suburban railway system in northern Osaka Prefecture that functions as an extension of the Osaka Metro Midosuji Line, connecting central Osaka with its northern suburbs.
-
B.
Keikyu Daishi Line
The Keikyu Daishi Line is a short commuter railway line in Kawasaki, Kanagawa Prefecture, Japan, providing local transit service as part of the Keikyu network.
-
C.
Saitama Railway
Saitama Railway is a Japanese railway company operating a key commuter line that connects Saitama Prefecture with the greater Tokyo metropolitan rail network.
-
D.
Heisei Chikuho Railway
Heisei Chikuho Railway is a Japanese private railway company operating local passenger rail services in Fukuoka Prefecture.
-
E.
Iyo Railway
Iyo Railway is a regional private railway company in Ehime Prefecture, Japan, best known for operating rail and tram services in and around the city of Matsuyama.
- 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: Keikyu railway network Target entity description: The Keikyu railway network is a private Japanese rail system serving the greater Tokyo and Yokohama area, known for its fast commuter and airport access services.
-
A.
Kita-Osaka Kyuko Railway network
The Kita-Osaka Kyuko Railway network is a private suburban railway system in northern Osaka Prefecture that functions as an extension of the Osaka Metro Midosuji Line, connecting central Osaka with its northern suburbs.
-
B.
Keikyu Daishi Line
The Keikyu Daishi Line is a short commuter railway line in Kawasaki, Kanagawa Prefecture, Japan, providing local transit service as part of the Keikyu network.
-
C.
Saitama Railway
Saitama Railway is a Japanese railway company operating a key commuter line that connects Saitama Prefecture with the greater Tokyo metropolitan rail network.
-
D.
Heisei Chikuho Railway
Heisei Chikuho Railway is a Japanese private railway company operating local passenger rail services in Fukuoka Prefecture.
-
E.
Iyo Railway
Iyo Railway is a regional private railway company in Ehime Prefecture, Japan, best known for operating rail and tram services in and around the city of Matsuyama.
- 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_69e0b4b0373881909dd3e9387f82eab4 |
completed | April 16, 2026, 10:06 a.m. |
| NER | Named-entity recognition | batch_69e69b5d93ec81908259696359090b35 |
completed | April 20, 2026, 9:32 p.m. |
Created at: April 16, 2026, 11:34 a.m.