Triple
T23161985
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | E217 series |
E578610
|
entity |
| Predicate | family |
P566
|
FINISHED |
| Object | JR East E-series EMUs |
—
|
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: JR East E-series EMUs | Statement: [E217 series, family, JR East E-series EMUs]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: JR East E-series EMUs Context triple: [E217 series, family, JR East E-series EMUs]
-
A.
JR East E231-500 series EMU
The JR East E231-500 series EMU is a Japanese commuter electric multiple unit train type operated by East Japan Railway Company, known for its high-capacity, high-frequency service in the Tokyo metropolitan area.
-
B.
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.
-
C.
Keisei AE series EMU
The Keisei AE series EMU is a high-speed electric multiple unit train operated by Keisei Electric Railway in Japan, primarily used for the premium airport express service between central Tokyo and Narita Airport.
-
D.
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.
-
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: JR East E-series EMUs Target entity description: JR East E-series EMUs are a group of electric multiple unit train types operated by East Japan Railway Company, designed for various commuter and suburban services across eastern Japan.
-
A.
JR East E231-500 series EMU
chosen
The JR East E231-500 series EMU is a Japanese commuter electric multiple unit train type operated by East Japan Railway Company, known for its high-capacity, high-frequency service in the Tokyo metropolitan area.
-
B.
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.
-
C.
Keisei AE series EMU
The Keisei AE series EMU is a high-speed electric multiple unit train operated by Keisei Electric Railway in Japan, primarily used for the premium airport express service between central Tokyo and Narita Airport.
-
D.
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.
-
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.
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_69e245fc75348190a0288401044c8af8 |
completed | April 17, 2026, 2:38 p.m. |
| NER | Named-entity recognition | batch_69f18f019cd881908e3c68d99454da2a |
completed | April 29, 2026, 4:54 a.m. |
Created at: April 17, 2026, 4:02 p.m.