Triple
T262060
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tokyo |
E5560
|
entity |
| Predicate | hasMetroSystem |
P522
|
FINISHED |
| Object |
Tokyo Metro
Tokyo Metro is one of the two main rapid transit operators in Tokyo, running an extensive network of subway lines that serve the city’s central and metropolitan areas.
|
E34803
|
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: Tokyo Metro | Statement: [Tokyo, hasMetroSystem, Tokyo Metro]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tokyo Metro Context triple: [Tokyo, hasMetroSystem, Tokyo Metro]
-
A.
Tokyu Den-en-toshi Line
Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
-
B.
Tokyo Metro Hanzomon Line
The Tokyo Metro Hanzomon Line is a major Tokyo subway line that runs east–west across the city center, linking Shibuya with key business and residential districts and offering through services onto private railway lines.
-
C.
Tokyo Metro Fukutoshin Line
The Tokyo Metro Fukutoshin Line is a major Tokyo subway line running north–south through central and suburban areas, connecting key hubs such as Shibuya with other important districts.
-
D.
Tokyo Metro Ginza Line
The Tokyo Metro Ginza Line is one of Tokyo’s oldest and most central subway lines, running east–west through major commercial and business districts including Shibuya and Ginza.
-
E.
Tokyu Toyoko Line
The Tokyu Toyoko Line is a major private railway line in the Tokyo–Yokohama area that connects central Tokyo with Yokohama and links to multiple subway and intercity rail services.
- 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: Tokyo Metro Triple: [Tokyo, hasMetroSystem, Tokyo Metro]
Generated description
Tokyo Metro is one of the two main rapid transit operators in Tokyo, running an extensive network of subway lines that serve the city’s central and metropolitan areas.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Tokyo Metro Target entity description: Tokyo Metro is one of the two main rapid transit operators in Tokyo, running an extensive network of subway lines that serve the city’s central and metropolitan areas.
-
A.
Tokyu Den-en-toshi Line
Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
-
B.
Tokyo Metro Hanzomon Line
The Tokyo Metro Hanzomon Line is a major Tokyo subway line that runs east–west across the city center, linking Shibuya with key business and residential districts and offering through services onto private railway lines.
-
C.
Tokyo Metro Fukutoshin Line
The Tokyo Metro Fukutoshin Line is a major Tokyo subway line running north–south through central and suburban areas, connecting key hubs such as Shibuya with other important districts.
-
D.
Tokyo Metro Ginza Line
The Tokyo Metro Ginza Line is one of Tokyo’s oldest and most central subway lines, running east–west through major commercial and business districts including Shibuya and Ginza.
-
E.
Tokyu Toyoko Line
The Tokyu Toyoko Line is a major private railway line in the Tokyo–Yokohama area that connects central Tokyo with Yokohama and links to multiple subway and intercity rail services.
- 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_69a2580a64ac8190ad76e34bb0715b5e |
completed | Feb. 28, 2026, 2:50 a.m. |
| NER | Named-entity recognition | batch_69a25d7428dc8190ae12b12a21fcc6cb |
completed | Feb. 28, 2026, 3:13 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a38b8ca1f08190a13733c03b9161f9 |
completed | March 1, 2026, 12:42 a.m. |
| NEDg | Description generation | batch_69a38bcc7d3c8190a2a1216f58631c5c |
completed | March 1, 2026, 12:43 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a38c56810c8190922ad62014393734 |
completed | March 1, 2026, 12:46 a.m. |
Created at: Feb. 28, 2026, 2:55 a.m.