Triple
T12049602
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Keio Line |
E286879
|
entity |
| Predicate | usesRollingStock |
P5426
|
FINISHED |
| Object |
Keio 8000 series
The Keio 8000 series is a Japanese electric multiple unit train type operated by Keio Corporation on its commuter rail lines in the Tokyo area.
|
E967159
|
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 8000 series | Statement: [Keio Line, usesRollingStock, Keio 8000 series]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Keio 8000 series Context triple: [Keio Line, usesRollingStock, Keio 8000 series]
-
A.
Keio 7000 series
The Keio 7000 series is a Japanese electric multiple unit train type operated by Keio Corporation, known for serving commuter routes in the Tokyo area.
-
B.
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.
-
C.
Seibu 40000 series
The Seibu 40000 series is a modern Japanese electric multiple unit train operated by Seibu Railway, designed for commuter services with features such as long-distance comfort seating and improved passenger amenities.
-
D.
Odakyu 4000 series
The Odakyu 4000 series is a Japanese electric multiple unit commuter train type operated by Odakyu Electric Railway, designed for through-services with Tokyo Metro and known for its modern, energy-efficient features.
-
E.
Ohmi Railway 800 series
The Ohmi Railway 800 series is a type of electric multiple unit train operated by the private Ohmi Railway company in Shiga Prefecture, Japan.
- 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 8000 series Triple: [Keio Line, usesRollingStock, Keio 8000 series]
Generated description
The Keio 8000 series is a Japanese electric multiple unit train type operated by Keio Corporation on its commuter rail lines in the Tokyo area.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Keio 8000 series Target entity description: The Keio 8000 series is a Japanese electric multiple unit train type operated by Keio Corporation on its commuter rail lines in the Tokyo area.
-
A.
Keio 7000 series
The Keio 7000 series is a Japanese electric multiple unit train type operated by Keio Corporation, known for serving commuter routes in the Tokyo area.
-
B.
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.
-
C.
Seibu 40000 series
The Seibu 40000 series is a modern Japanese electric multiple unit train operated by Seibu Railway, designed for commuter services with features such as long-distance comfort seating and improved passenger amenities.
-
D.
Odakyu 4000 series
The Odakyu 4000 series is a Japanese electric multiple unit commuter train type operated by Odakyu Electric Railway, designed for through-services with Tokyo Metro and known for its modern, energy-efficient features.
-
E.
Ohmi Railway 800 series
The Ohmi Railway 800 series is a type of electric multiple unit train operated by the private Ohmi Railway company in Shiga Prefecture, Japan.
- 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_69d6ab4780948190bdb9f7620c2ac27e |
completed | April 8, 2026, 7:23 p.m. |
| NER | Named-entity recognition | batch_69d904227958819084dbd5eb2566c735 |
completed | April 10, 2026, 2:07 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f5f64d12b48190a041d6782c6a13e0 |
completed | May 2, 2026, 1:04 p.m. |
| NEDg | Description generation | batch_69f6037933708190b80c6b0f874f9786 |
completed | May 2, 2026, 2 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69f604501eec8190a6f3cafef76b5f2c |
completed | May 2, 2026, 2:04 p.m. |
Created at: April 8, 2026, 9:47 p.m.