Triple
T1195535
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Keio Inokashira Line |
E25658
|
entity |
| Predicate | rollingStock |
P1305
|
FINISHED |
| Object |
Keio 1000 series EMU
The Keio 1000 series EMU is a Japanese electric multiple unit train operated by Keio Corporation, known for serving Tokyo’s Inokashira Line with modern, colorful commuter rolling stock.
|
E145989
|
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: Keio 1000 series EMU | Statement: [Keio Inokashira Line, rollingStock, Keio 1000 series EMU]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Keio 1000 series EMU Context triple: [Keio Inokashira Line, rollingStock, Keio 1000 series EMU]
-
A.
Tokyo Metro 10000 series
The Tokyo Metro 10000 series is a fleet of modern electric multiple unit trains operated by Tokyo Metro, known for serving through-services on several interconnected subway and private railway lines in the Tokyo area.
-
B.
Seibu 6000 series
The Seibu 6000 series is a Japanese electric multiple unit train type operated by Seibu Railway, commonly used for through-services on Tokyo subway lines.
-
C.
Tokyo Metro 1000 series
The Tokyo Metro 1000 series is a modern electric multiple unit train used on Tokyo’s subway system, designed with retro-inspired styling that pays homage to the original Ginza Line cars while incorporating contemporary technology and comfort features.
-
D.
E231 series EMU
The E231 series EMU is a widely used Japanese commuter train type operated by JR East, known for its high-capacity, rapid-transit service in the Greater Tokyo area.
-
E.
Tokyu 5050 series
The Tokyu 5050 series is a Japanese electric multiple unit commuter train type operated by Tokyu Corporation and used on through-services with Tokyo Metro and other railway lines in the Tokyo area.
- 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: Keio 1000 series EMU Triple: [Keio Inokashira Line, rollingStock, Keio 1000 series EMU]
Generated description
The Keio 1000 series EMU is a Japanese electric multiple unit train operated by Keio Corporation, known for serving Tokyo’s Inokashira Line with modern, colorful commuter rolling stock.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Keio 1000 series EMU Target entity description: The Keio 1000 series EMU is a Japanese electric multiple unit train operated by Keio Corporation, known for serving Tokyo’s Inokashira Line with modern, colorful commuter rolling stock.
-
A.
Tokyo Metro 10000 series
The Tokyo Metro 10000 series is a fleet of modern electric multiple unit trains operated by Tokyo Metro, known for serving through-services on several interconnected subway and private railway lines in the Tokyo area.
-
B.
Seibu 6000 series
The Seibu 6000 series is a Japanese electric multiple unit train type operated by Seibu Railway, commonly used for through-services on Tokyo subway lines.
-
C.
Tokyo Metro 1000 series
The Tokyo Metro 1000 series is a modern electric multiple unit train used on Tokyo’s subway system, designed with retro-inspired styling that pays homage to the original Ginza Line cars while incorporating contemporary technology and comfort features.
-
D.
E231 series EMU
The E231 series EMU is a widely used Japanese commuter train type operated by JR East, known for its high-capacity, rapid-transit service in the Greater Tokyo area.
-
E.
Tokyu 5050 series
The Tokyu 5050 series is a Japanese electric multiple unit commuter train type operated by Tokyu Corporation and used on through-services with Tokyo Metro and other railway lines in the Tokyo area.
- 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_69a49429f5ec8190a6a205eb0ae81e5e |
completed | March 1, 2026, 7:31 p.m. |
| NER | Named-entity recognition | batch_69a4bd7a756c819085d695acfffeaceb |
completed | March 1, 2026, 10:28 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69aca2e7d28c8190acf5ae2237e6d4e0 |
completed | March 7, 2026, 10:12 p.m. |
| NEDg | Description generation | batch_69aca3752a3c81908bd6d9744ad5f5a2 |
completed | March 7, 2026, 10:15 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69aca3e44bf481908c5726adddc4b428 |
completed | March 7, 2026, 10:17 p.m. |
Created at: March 1, 2026, 7:46 p.m.