Triple
T1860669
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tokyo Metro |
E34803
|
entity |
| Predicate | operatesLine |
P15252
|
FINISHED |
| Object |
Marunouchi Line
The Marunouchi Line is one of Tokyo’s main subway lines, forming a central loop and radial route that connects key business, shopping, and transit hubs across the city.
|
E390381
|
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: Marunouchi Line | Statement: [Tokyo Metro, operatesLine, Marunouchi Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Marunouchi Line Context triple: [Tokyo Metro, operatesLine, Marunouchi Line]
-
A.
Sennichimae Line
The Sennichimae Line is a rapid transit line in Osaka, Japan, forming part of the city’s urban subway network.
-
B.
Imazatosuji Line
The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
-
C.
Takasaki Line
The Takasaki Line is a major railway line in Japan operated by JR East that connects the Tokyo metropolitan area with Saitama and Gunma Prefectures, serving as an important commuter and intercity route.
-
D.
Takashinohama Line
The Takashinohama Line is a short commuter railway line in Osaka Prefecture, Japan, operated by Nankai Electric Railway and serving local passenger traffic.
-
E.
Nagahori Tsurumi-ryokuchi Line
The Nagahori Tsurumi-ryokuchi Line is a major Osaka Metro subway line in Osaka, Japan, known for being the country’s first full-scale linear motor-powered urban railway line.
- 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: Marunouchi Line Triple: [Tokyo Metro, operatesLine, Marunouchi Line]
Generated description
The Marunouchi Line is one of Tokyo’s main subway lines, forming a central loop and radial route that connects key business, shopping, and transit hubs across the city.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Marunouchi Line Target entity description: The Marunouchi Line is one of Tokyo’s main subway lines, forming a central loop and radial route that connects key business, shopping, and transit hubs across the city.
-
A.
Sennichimae Line
The Sennichimae Line is a rapid transit line in Osaka, Japan, forming part of the city’s urban subway network.
-
B.
Imazatosuji Line
The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
-
C.
Takasaki Line
The Takasaki Line is a major railway line in Japan operated by JR East that connects the Tokyo metropolitan area with Saitama and Gunma Prefectures, serving as an important commuter and intercity route.
-
D.
Takashinohama Line
The Takashinohama Line is a short commuter railway line in Osaka Prefecture, Japan, operated by Nankai Electric Railway and serving local passenger traffic.
-
E.
Nagahori Tsurumi-ryokuchi Line
The Nagahori Tsurumi-ryokuchi Line is a major Osaka Metro subway line in Osaka, Japan, known for being the country’s first full-scale linear motor-powered urban railway line.
- 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_69a88600b2f88190bc09303e68ab517e |
completed | March 4, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69abb09caee881908efe8aa38471298c |
completed | March 7, 2026, 4:59 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b4fac8ae5c8190bfa6c12e3997374b |
completed | March 14, 2026, 6:06 a.m. |
| NEDg | Description generation | batch_69b4fc08d65081908953482b10fa5611 |
completed | March 14, 2026, 6:11 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69b4fc7d8cf081909c4447818b5363c5 |
completed | March 14, 2026, 6:13 a.m. |
Created at: March 4, 2026, 7:34 p.m.