Triple
T12977871
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Keiyō Line |
E321575
|
entity |
| Predicate | rollingStockUsed |
P5426
|
FINISHED |
| Object |
JR East 209 series
The JR East 209 series is a Japanese commuter electric multiple unit train type introduced in the 1990s for high-frequency urban and suburban services in the Tokyo area.
|
E1031415
|
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: JR East 209 series | Statement: [Keiyō Line, rollingStockUsed, JR East 209 series]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: JR East 209 series Context triple: [Keiyō Line, rollingStockUsed, JR East 209 series]
-
A.
JR East 205 series
The JR East 205 series is a Japanese electric multiple unit commuter train type introduced in the 1980s and widely used on various urban and suburban lines in the Tokyo area.
-
B.
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.
-
C.
JR West 207 series
The JR West 207 series is a Japanese electric multiple unit commuter train operated by West Japan Railway Company on urban and suburban lines in the Kansai region.
-
D.
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.
-
E.
JR West 201 series EMU
The JR West 201 series EMU is a Japanese electric multiple unit train type operated by West Japan Railway Company, primarily used for commuter services in the Kansai region.
- 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: JR East 209 series Triple: [Keiyō Line, rollingStockUsed, JR East 209 series]
Generated description
The JR East 209 series is a Japanese commuter electric multiple unit train type introduced in the 1990s for high-frequency urban and suburban services in the Tokyo area.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: JR East 209 series Target entity description: The JR East 209 series is a Japanese commuter electric multiple unit train type introduced in the 1990s for high-frequency urban and suburban services in the Tokyo area.
-
A.
JR East 205 series
The JR East 205 series is a Japanese electric multiple unit commuter train type introduced in the 1980s and widely used on various urban and suburban lines in the Tokyo area.
-
B.
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.
-
C.
JR West 207 series
The JR West 207 series is a Japanese electric multiple unit commuter train operated by West Japan Railway Company on urban and suburban lines in the Kansai region.
-
D.
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.
-
E.
JR West 201 series EMU
The JR West 201 series EMU is a Japanese electric multiple unit train type operated by West Japan Railway Company, primarily used for commuter services in the Kansai region.
- 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_69d80763bd6c819094437da5b20b01d2 |
completed | April 9, 2026, 8:09 p.m. |
| NER | Named-entity recognition | batch_69d97e59a4c88190907d05b8d57dae89 |
completed | April 10, 2026, 10:48 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f70a1ee5d08190ace265c5f15d8d30 |
completed | May 3, 2026, 8:41 a.m. |
| NEDg | Description generation | batch_69f70aec0e4481909f6ea77136f2e970 |
completed | May 3, 2026, 8:44 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69f70bcb8b60819087afe37a3919d26b |
completed | May 3, 2026, 8:48 a.m. |
Created at: April 9, 2026, 8:38 p.m.