Triple
T14971689
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Mitakadai Station |
E373334
|
entity |
| Predicate | isOnRailwayNetwork |
P62786
|
FINISHED |
| Object | Keio Railway network |
E178944
|
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: Keio Railway network | Statement: [Mitakadai Station, isOnRailwayNetwork, Keio Railway network]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Keio Railway network Context triple: [Mitakadai Station, isOnRailwayNetwork, Keio Railway network]
-
A.
Keio railway network
chosen
The Keio railway network is a private railway system in the Tokyo metropolitan area operated by Keio Corporation, linking central Tokyo with its western suburbs through multiple commuter lines.
-
B.
Tokyu railway network
The Tokyu railway network is a major private rail system in the Greater Tokyo area, operated by Tokyu Corporation and serving key suburban and urban corridors including central hubs like Shibuya.
-
C.
Keihan Electric Railway network
The Keihan Electric Railway network is a private railway system in Japan that primarily connects the Osaka and Kyoto metropolitan areas, serving as a major commuter and intercity transport corridor in the Kansai region.
-
D.
JR Tōzai Line urban network
The JR Tōzai Line urban network is a commuter rail system in the Kansai region of Japan that connects central Osaka with surrounding areas via the JR Tōzai Line.
-
E.
Keisei Electric Railway lines
Keisei Electric Railway lines are a group of private railway routes in the Greater Tokyo area best known for linking central Tokyo with Narita International Airport and serving commuter and interurban travel in Chiba Prefecture.
- 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_69d85ccbbcd48190acb56e7cf104d8ad |
completed | April 10, 2026, 2:13 a.m. |
| NER | Named-entity recognition | batch_69ded6e59a7c8190a1634a706ea68fda |
completed | April 15, 2026, 12:08 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fe8be8af688190832efb00695f8b20 |
completed | May 9, 2026, 1:20 a.m. |
Created at: April 10, 2026, 2:50 a.m.