Triple
T9888681
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metropolitan Expressway (Tokyo) |
E181400
|
entity |
| Predicate | formerOperator |
P179
|
FINISHED |
| Object | Metropolitan Expressway Public Corporation |
E827472
|
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: Metropolitan Expressway Public Corporation | Statement: [Metropolitan Expressway (Tokyo), formerOperator, Metropolitan Expressway Public Corporation]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metropolitan Expressway Public Corporation Context triple: [Metropolitan Expressway (Tokyo), formerOperator, Metropolitan Expressway Public Corporation]
-
A.
Metropolitan Expressway Company Limited
chosen
Metropolitan Expressway Company Limited is the public–private company responsible for managing, maintaining, and operating Tokyo’s urban expressway network.
-
B.
Hanshin Expressway Company Limited
Hanshin Expressway Company Limited is a Japanese company responsible for managing and operating the Hanshin Expressway network serving the Osaka–Kobe metropolitan area.
-
C.
East Nippon Expressway Company
East Nippon Expressway Company is a major Japanese expressway operator responsible for managing and maintaining toll roads and related infrastructure in eastern Japan.
-
D.
Tokyo Metropolitan Bureau of Transportation
The Tokyo Metropolitan Bureau of Transportation is the local government agency that operates key public transit services in Tokyo, including subways, trams, and buses.
-
E.
Teito Rapid Transit Authority
Teito Rapid Transit Authority was the former public operator of several Tokyo subway lines before its privatization and reorganization as Tokyo Metro.
- 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_69ca8283a6708190801af7a25a7ebb9f |
completed | March 30, 2026, 2:02 p.m. |
| NER | Named-entity recognition | batch_69cdb4592db881909b134834dde614d8 |
completed | April 2, 2026, 12:12 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d20d888b408190a68ff55d63558478 |
completed | April 5, 2026, 7:21 a.m. |
Created at: March 30, 2026, 8:39 p.m.