Triple
T21312057
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Meitetsu Nagoya Main Line |
E525362
|
entity |
| Predicate | hasRollingStockOperator |
P6305
|
FINISHED |
| Object | Meitetsu 3150 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 3150 series | Statement: [Meitetsu Nagoya Main Line, hasRollingStockOperator, Meitetsu 3150 series]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Meitetsu 3150 series Context triple: [Meitetsu Nagoya Main Line, hasRollingStockOperator, Meitetsu 3150 series]
-
A.
Meitetsu 3300 series
The Meitetsu 3300 series is a type of electric multiple unit commuter train operated by Nagoya Railroad (Meitetsu) in Japan.
-
B.
Meitetsu 2200 series
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.
-
C.
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.
-
D.
Toei 5500 series
The Toei 5500 series is a modern Japanese electric multiple unit train operated by the Tokyo Metropolitan Bureau of Transportation, designed for through-services and improved comfort and performance on the Toei Asakusa Line.
-
E.
Toei 6300 series EMU
The Toei 6300 series EMU is a Japanese electric multiple unit train type operated by the Tokyo Metropolitan Bureau of Transportation, primarily used on through-services connecting the Toei Mita Line with other suburban 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 3150 series Target entity description: The Meitetsu 3150 series is a type of electric multiple unit train operated by Nagoya Railroad (Meitetsu) for commuter services in the Nagoya metropolitan area of Japan.
-
A.
Meitetsu 3300 series
The Meitetsu 3300 series is a type of electric multiple unit commuter train operated by Nagoya Railroad (Meitetsu) in Japan.
-
B.
Meitetsu 2200 series
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.
-
C.
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.
-
D.
Toei 5500 series
The Toei 5500 series is a modern Japanese electric multiple unit train operated by the Tokyo Metropolitan Bureau of Transportation, designed for through-services and improved comfort and performance on the Toei Asakusa Line.
-
E.
Toei 6300 series EMU
The Toei 6300 series EMU is a Japanese electric multiple unit train type operated by the Tokyo Metropolitan Bureau of Transportation, primarily used on through-services connecting the Toei Mita Line with other suburban 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.