Triple
T21312055
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Meitetsu Nagoya Main Line |
E525362
|
entity |
| Predicate | hasRollingStockOperator |
P6305
|
FINISHED |
| Object | Meitetsu 2200 series |
—
|
NE NERFINISHED |
How this triple was built (3 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: Meitetsu 2200 series | Statement: [Meitetsu Nagoya Main Line, hasRollingStockOperator, Meitetsu 2200 series]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Meitetsu 2200 series Context triple: [Meitetsu Nagoya Main Line, hasRollingStockOperator, Meitetsu 2200 series]
-
A.
Keikyu 2100 series EMU
The Keikyu 2100 series EMU is a Japanese electric multiple unit train operated by Keikyu, known for its distinctive front design and use on limited express and commuter services in the Tokyo–Yokohama area.
-
B.
Seibu 2000 series EMU
The Seibu 2000 series EMU is a Japanese electric multiple unit train type operated by Seibu Railway, primarily used for commuter services in the Tokyo area.
-
C.
JR West 223 series EMU
The JR West 223 series EMU is a Japanese electric multiple unit train used for high-frequency suburban and rapid services in the Kansai region.
-
D.
JR West 221 series
The JR West 221 series is a Japanese electric multiple unit train type operated by West Japan Railway Company for suburban and interurban passenger services.
-
E.
Toei 6500 series EMU
The Toei 6500 series EMU is a modern Japanese electric multiple unit train operated by the Tokyo Metropolitan Bureau of Transportation, designed for through-services on Tokyo subway and interconnecting commuter lines.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Meitetsu 2200 series Target entity description: The Meitetsu 2200 series is a Japanese limited express electric multiple unit train type operated by Nagoya Railroad (Meitetsu) for interurban passenger services in the Nagoya area.
-
A.
Keikyu 2100 series EMU
The Keikyu 2100 series EMU is a Japanese electric multiple unit train operated by Keikyu, known for its distinctive front design and use on limited express and commuter services in the Tokyo–Yokohama area.
-
B.
Seibu 2000 series EMU
The Seibu 2000 series EMU is a Japanese electric multiple unit train type operated by Seibu Railway, primarily used for commuter services in the Tokyo area.
-
C.
JR West 223 series EMU
The JR West 223 series EMU is a Japanese electric multiple unit train used for high-frequency suburban and rapid services in the Kansai region.
-
D.
JR West 221 series
The JR West 221 series is a Japanese electric multiple unit train type operated by West Japan Railway Company for suburban and interurban passenger services.
-
E.
Toei 6500 series EMU
The Toei 6500 series EMU is a modern Japanese electric multiple unit train operated by the Tokyo Metropolitan Bureau of Transportation, designed for through-services on Tokyo subway and interconnecting commuter lines.
- F. None of above. chosen
Provenance (2 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_69e0b518b8948190ad69cf9a8784d397 |
completed | April 16, 2026, 10:08 a.m. |
| NER | Named-entity recognition | batch_69e75dca66ac8190a5f0a372a9bc25a7 |
completed | April 21, 2026, 11:21 a.m. |
Created at: April 16, 2026, 4:22 p.m.