Triple
T1183174
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tokyo Metro Hanzomon Line |
E25185
|
entity |
| Predicate | formerOperator |
P179
|
FINISHED |
| Object | Teito Rapid Transit Authority |
E156852
|
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: Teito Rapid Transit Authority | Statement: [Tokyo Metro Hanzomon Line, formerOperator, Teito Rapid Transit Authority]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Teito Rapid Transit Authority Context triple: [Tokyo Metro Hanzomon Line, formerOperator, Teito Rapid Transit Authority]
-
A.
Teito Rapid Transit Authority
chosen
Teito Rapid Transit Authority was the former public operator of several Tokyo subway lines before its privatization and reorganization as Tokyo Metro.
-
B.
Nankai Electric Railway
Nankai Electric Railway is a major private railway company in Japan’s Kansai region, operating key commuter and interurban lines connecting Osaka with Wakayama and Kansai International Airport.
-
C.
Osaka Metro
Osaka Metro is the rapid transit network serving Japan’s city of Osaka and its surrounding urban area.
-
D.
Kintetsu Railway
Kintetsu Railway is a major Japanese private railway operator in the Kansai region, known for its extensive interurban network connecting cities such as Osaka, Nara, Kyoto, and Nagoya.
-
E.
Hanshin Electric Railway Co., Ltd.
Hanshin Electric Railway Co., Ltd. is a Japanese private railway company in the Kansai region, best known in popular culture as the corporate parent of the professional baseball team Hanshin Tigers.
- 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_69a494267b4c819088c97a59182bf56a |
completed | March 1, 2026, 7:31 p.m. |
| NER | Named-entity recognition | batch_69a4bd35fb888190adf1e5d0615fa725 |
completed | March 1, 2026, 10:27 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ad08a02ba081908e0036a9d8bfc9f2 |
completed | March 8, 2026, 5:26 a.m. |
Created at: March 1, 2026, 7:45 p.m.