Triple
T8257225
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tama Monorail |
E193100
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object |
Tama Toshi Monorail Co., Ltd.
Tama Toshi Monorail Co., Ltd. is a Japanese transportation company that owns and operates the Tama Toshi Monorail Line serving the Tama area of western Tokyo.
|
E721181
|
NE FINISHED |
How this triple was built (4 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: Tama Toshi Monorail Co., Ltd. | Statement: [Tama Monorail, operator, Tama Toshi Monorail Co., Ltd.]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tama Toshi Monorail Co., Ltd. Context triple: [Tama Monorail, operator, Tama Toshi Monorail Co., Ltd.]
-
A.
Tokyo Monorail Co., Ltd.
Tokyo Monorail Co., Ltd. is a Japanese railway company that operates the monorail line connecting central Tokyo with Haneda Airport.
-
B.
Osaka Monorail Co., Ltd.
Osaka Monorail Co., Ltd. is the railway company that operates the Osaka Monorail transit system in Osaka Prefecture, Japan.
-
C.
Yokohama Minatomirai Railway Company
Yokohama Minatomirai Railway Company is a Japanese private railway operator that manages and operates the Minatomirai Line in Yokohama, Kanagawa Prefecture.
-
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.
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.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Tama Toshi Monorail Co., Ltd. Triple: [Tama Monorail, operator, Tama Toshi Monorail Co., Ltd.]
Generated description
Tama Toshi Monorail Co., Ltd. is a Japanese transportation company that owns and operates the Tama Toshi Monorail Line serving the Tama area of western Tokyo.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Tama Toshi Monorail Co., Ltd. Target entity description: Tama Toshi Monorail Co., Ltd. is a Japanese transportation company that owns and operates the Tama Toshi Monorail Line serving the Tama area of western Tokyo.
-
A.
Tokyo Monorail Co., Ltd.
Tokyo Monorail Co., Ltd. is a Japanese railway company that operates the monorail line connecting central Tokyo with Haneda Airport.
-
B.
Osaka Monorail Co., Ltd.
Osaka Monorail Co., Ltd. is the railway company that operates the Osaka Monorail transit system in Osaka Prefecture, Japan.
-
C.
Yokohama Minatomirai Railway Company
Yokohama Minatomirai Railway Company is a Japanese private railway operator that manages and operates the Minatomirai Line in Yokohama, Kanagawa Prefecture.
-
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.
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.
- F. None of above. chosen
Provenance (5 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_69ca82dfad9c8190b8cd18fb89f50f40 |
completed | March 30, 2026, 2:04 p.m. |
| NER | Named-entity recognition | batch_69cb78fce9308190ac36512e80b06b52 |
completed | March 31, 2026, 7:34 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69cd355bef508190894bd01ec39e83f6 |
completed | April 1, 2026, 3:10 p.m. |
| NEDg | Description generation | batch_69cd37a7ea30819094b1c140868fab5f |
completed | April 1, 2026, 3:20 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69cd4f0055dc8190803a7c412533aec4 |
completed | April 1, 2026, 4:59 p.m. |
Created at: March 30, 2026, 5:49 p.m.