Triple
T13229681
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MRT Light Red Line |
E314977
|
entity |
| Predicate | rollingStock |
P1305
|
FINISHED |
| Object |
Hitachi EMU
Hitachi EMU is a type of electric multiple unit train manufactured by Hitachi, used for urban mass rapid transit services.
|
E1037956
|
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: Hitachi EMU | Statement: [MRT Light Red Line, rollingStock, Hitachi EMU]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Hitachi EMU Context triple: [MRT Light Red Line, rollingStock, Hitachi EMU]
-
A.
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.
-
B.
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.
-
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.
Odakyu 1000 series EMU
The Odakyu 1000 series EMU is a Japanese electric multiple unit train type operated by Odakyu Electric Railway for commuter services in the Tokyo area.
-
E.
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.
- 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: Hitachi EMU Triple: [MRT Light Red Line, rollingStock, Hitachi EMU]
Generated description
Hitachi EMU is a type of electric multiple unit train manufactured by Hitachi, used for urban mass rapid transit services.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Hitachi EMU Target entity description: Hitachi EMU is a type of electric multiple unit train manufactured by Hitachi, used for urban mass rapid transit services.
-
A.
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.
-
B.
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.
-
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.
Odakyu 1000 series EMU
The Odakyu 1000 series EMU is a Japanese electric multiple unit train type operated by Odakyu Electric Railway for commuter services in the Tokyo area.
-
E.
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.
- 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_69d806affc688190a25b6ccc588e9c72 |
completed | April 9, 2026, 8:06 p.m. |
| NER | Named-entity recognition | batch_69d98d336ae08190bfc118cfbefddf84 |
completed | April 10, 2026, 11:52 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f7305c5f8081908bbe19f2a644acc5 |
completed | May 3, 2026, 11:24 a.m. |
| NEDg | Description generation | batch_69f731093b0481908fb1a7b3fa14c73e |
completed | May 3, 2026, 11:27 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69f73186da9081908cec946610d745df |
completed | May 3, 2026, 11:29 a.m. |
Created at: April 9, 2026, 9:21 p.m.