Triple
T16240214
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tokyo Metro Tozai Line |
E394221
|
entity |
| Predicate | servesArea |
P82
|
FINISHED |
| Object | eastern Tokyo |
E1118889
|
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: eastern Tokyo | Statement: [Tokyo Metro Tozai Line, servesArea, eastern Tokyo]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: eastern Tokyo Context triple: [Tokyo Metro Tozai Line, servesArea, eastern Tokyo]
-
A.
eastern Tokyo
chosen
Eastern Tokyo is the broad urban area on the eastern side of Japan’s capital, encompassing several wards such as Kōtō and known for its mix of residential neighborhoods, waterfront districts, and commercial zones.
-
B.
southern Tokyo
Southern Tokyo is the broad urban area forming the southern part of Japan’s capital, encompassing coastal, industrial, and residential wards such as Ōta.
-
C.
western Tokyo
Western Tokyo is the suburban and semi-rural area of Tokyo Metropolis beyond the 23 special wards, encompassing cities and towns such as those in the Tama region.
-
D.
Toshima, Tokyo
Toshima, Tokyo is a special ward in northwestern Tokyo known for its major commercial and entertainment hub Ikebukuro and its mix of residential, educational, and cultural institutions.
-
E.
Itabashi, Tokyo
Itabashi, Tokyo is one of Tokyo's 23 special wards, located in the northwestern part of the metropolis and known as a primarily residential and commercial area.
- 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_69d87f2171208190951025e526947816 |
completed | April 10, 2026, 4:40 a.m. |
| NER | Named-entity recognition | batch_69e2455d5270819090171d4207223a28 |
completed | April 17, 2026, 2:36 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a000edd1ed08190aa0211c3b17a918e |
completed | May 10, 2026, 4:51 a.m. |
Created at: April 10, 2026, 5:04 a.m.