Triple
T1102243
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tokyo Metro Fukutoshin Line |
E25404
|
entity |
| Predicate | throughServiceWith |
P17741
|
FINISHED |
| Object |
Tobu Tojo Line
The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
|
E156031
|
NE FINISHED |
How this triple was built (5 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: Tobu Tojo Line | Statement: [Tokyo Metro Fukutoshin Line, throughServiceWith, Tobu Tojo Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tobu Tojo Line Context triple: [Tokyo Metro Fukutoshin Line, throughServiceWith, Tobu Tojo Line]
-
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.
Keio Inokashira Line
The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
-
C.
Yotsubashi Line
The Yotsubashi Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and serving key north–south corridors through the city.
-
D.
Tanimachi Line
The Tanimachi Line is a major rapid transit line in Osaka, Japan, running north–south through the city as part of the Osaka Metro network.
-
E.
Chuo Line
The Chuo Line is a major rapid transit line in the Osaka Metro system that runs east–west through central Osaka, connecting key commercial and residential districts.
- 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: Tobu Tojo Line Triple: [Tokyo Metro Fukutoshin Line, throughServiceWith, Tobu Tojo Line]
Generated description
The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Tobu Tojo Line Target entity description: The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
-
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.
Keio Inokashira Line
The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
-
C.
Yotsubashi Line
The Yotsubashi Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and serving key north–south corridors through the city.
-
D.
Tanimachi Line
The Tanimachi Line is a major rapid transit line in Osaka, Japan, running north–south through the city as part of the Osaka Metro network.
-
E.
Chuo Line
The Chuo Line is a major rapid transit line in the Osaka Metro system that runs east–west through central Osaka, connecting key commercial and residential districts.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: throughServiceWith Context triple: [Tokyo Metro Fukutoshin Line, throughServiceWith, Tobu Tojo Line]
-
A.
isPassedThroughBy
Indicates that something serves as a medium, route, or channel through which another thing moves, flows, or is transmitted.
-
B.
serviceWith
chosen
Indicates that one entity provides or is associated with a particular service offered to or used by another entity.
-
C.
implementedThrough
Indicates that something is realized, carried out, or made operational by means of a specified method, mechanism, or intermediary.
-
D.
servedByService
Indicates that something is provided, handled, or fulfilled by a particular service.
-
E.
hasServiceTo
Indicates that one entity provides, offers, or operates a service for or directed toward another entity.
- F. None of above.
Provenance (6 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_69a49428d4448190b3b36991ceae87ce |
completed | March 1, 2026, 7:31 p.m. |
| NER | Named-entity recognition | batch_69a4b9c21c2c8190a34d91a7afed23a9 |
completed | March 1, 2026, 10:12 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69acce55b5748190b54b8205a735ae89 |
completed | March 8, 2026, 1:18 a.m. |
| NEDg | Description generation | batch_69accf47541481909f2032cdf8e4272b |
completed | March 8, 2026, 1:22 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69accff8af488190a7580cf7c02ceed9 |
completed | March 8, 2026, 1:25 a.m. |
| PD | Predicate disambiguation | batch_69a4b7472c848190b0643872f67084a2 |
completed | March 1, 2026, 10:01 p.m. |
Created at: March 1, 2026, 7:43 p.m.