Triple
T6537745
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Toei Shinjuku Line at Kudanshita |
E168207
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object | Tokyo Metropolitan Bureau of Transportation |
E194125
|
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: Tokyo Metropolitan Bureau of Transportation | Statement: [Toei Shinjuku Line at Kudanshita, operator, Tokyo Metropolitan Bureau of Transportation]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tokyo Metropolitan Bureau of Transportation Context triple: [Toei Shinjuku Line at Kudanshita, operator, Tokyo Metropolitan Bureau of Transportation]
-
A.
Tokyo Metropolitan Bureau of Transportation
chosen
The Tokyo Metropolitan Bureau of Transportation is the local government agency that operates key public transit services in Tokyo, including subways, trams, and buses.
-
B.
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.
-
C.
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.
-
D.
Keihan Electric Railway Co., Ltd.
Keihan Electric Railway Co., Ltd. is a major Japanese private railway operator serving the Osaka–Kyoto region, known for its extensive commuter rail network and related transportation and leisure businesses.
-
E.
Tobu Railway
Tobu Railway is a major private railway company in Japan that operates extensive rail networks in the Greater Tokyo area and surrounding regions.
- 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_69c68a51564081909e93aee0dbd9cca3 |
completed | March 27, 2026, 1:46 p.m. |
| NER | Named-entity recognition | batch_69c6add33acc8190bb0a9531648198f2 |
completed | March 27, 2026, 4:18 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c7a303b960819082981f0efbdce014 |
completed | March 28, 2026, 9:44 a.m. |
Created at: March 27, 2026, 1:49 p.m.