Triple
T9629682
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Ueno Station |
E232565
|
entity |
| Predicate | operatedBy |
P86
|
FINISHED |
| Object | JR East |
E149875
|
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: JR East | Statement: [Ueno Station, operatedBy, JR East]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: JR East Context triple: [Ueno Station, operatedBy, JR East]
-
A.
East Japan Railway Company
chosen
East Japan Railway Company is a major Japanese railway operator that runs an extensive network of commuter and high-speed train services across eastern Honshu, including the Tokyo metropolitan area.
-
B.
Central Japan Railway Company
Central Japan Railway Company is a major Japanese railway operator best known for running the Tokaido Shinkansen high-speed rail line connecting Tokyo, Nagoya, and Osaka.
-
C.
West Japan Railway Company
West Japan Railway Company is one of Japan’s major regional railway operators, managing extensive rail networks across western Honshu including the Kansai area.
-
D.
Tokyu Railways
Tokyu Railways is a major private railway operator in the Greater Tokyo area of Japan, known for its extensive commuter rail network and integration with urban development projects.
-
E.
Keisei Electric Railway
Keisei Electric Railway is a major private railway operator in the Greater Tokyo area, best known for linking central Tokyo with Chiba Prefecture and Narita International Airport.
- 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_69ca848793ec8190a93a12383a754dc0 |
completed | March 30, 2026, 2:11 p.m. |
| NER | Named-entity recognition | batch_69cd9b01863c8190a9ec4684804f96bc |
completed | April 1, 2026, 10:24 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d182291c34819099f3f43769849c5d |
completed | April 4, 2026, 9:27 p.m. |
Created at: March 30, 2026, 8:10 p.m.