Triple
T6199480
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | E235 series EMU |
E138591
|
entity |
| Predicate | usedOnLine |
P15252
|
FINISHED |
| Object |
Narita Line
The Narita Line is a railway line in Japan operated by JR East that connects Chiba Prefecture with Narita and its surrounding areas, serving both local commuters and access to Narita International Airport via connecting services.
|
E820785
|
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: Narita Line | Statement: [E235 series EMU, usedOnLine, Narita Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Narita Line Context triple: [E235 series EMU, usedOnLine, Narita Line]
-
A.
Sakaisuji Line
The Sakaisuji Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and connecting key districts through north–south underground service.
-
B.
Yokosuka Line
The Yokosuka Line is a major JR East railway line in the Greater Tokyo area that connects central Tokyo with Yokosuka in Kanagawa Prefecture, serving both commuter and intercity traffic.
-
C.
Seto-Ōhashi Line
The Seto-Ōhashi Line is a railway route in Japan that connects Honshu and Shikoku across the Seto Inland Sea, forming the rail link over the Great Seto Bridge system.
-
D.
Keikyū Main Line
The Keikyū Main Line is a major private railway line in the Greater Tokyo area of Japan, operated by Keikyu Corporation and serving as a key commuter route between central Tokyo and cities in Kanagawa Prefecture.
-
E.
Yamatoji Line
The Yamatoji Line is a railway line in Japan operated by JR West that connects Osaka with Nara, serving as a key commuter and intercity route 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: Narita Line Triple: [E235 series EMU, usedOnLine, Narita Line]
Generated description
The Narita Line is a railway line in Japan operated by JR East that connects Chiba Prefecture with Narita and its surrounding areas, serving both local commuters and access to Narita International Airport via connecting services.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Narita Line Target entity description: The Narita Line is a railway line in Japan operated by JR East that connects Chiba Prefecture with Narita and its surrounding areas, serving both local commuters and access to Narita International Airport via connecting services.
-
A.
Sakaisuji Line
The Sakaisuji Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and connecting key districts through north–south underground service.
-
B.
Yokosuka Line
The Yokosuka Line is a major JR East railway line in the Greater Tokyo area that connects central Tokyo with Yokosuka in Kanagawa Prefecture, serving both commuter and intercity traffic.
-
C.
Seto-Ōhashi Line
The Seto-Ōhashi Line is a railway route in Japan that connects Honshu and Shikoku across the Seto Inland Sea, forming the rail link over the Great Seto Bridge system.
-
D.
Keikyū Main Line
The Keikyū Main Line is a major private railway line in the Greater Tokyo area of Japan, operated by Keikyu Corporation and serving as a key commuter route between central Tokyo and cities in Kanagawa Prefecture.
-
E.
Yamatoji Line
The Yamatoji Line is a railway line in Japan operated by JR West that connects Osaka with Nara, serving as a key commuter and intercity route 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_69c008acbea48190991c6b834bb45d65 |
completed | March 22, 2026, 3:20 p.m. |
| NER | Named-entity recognition | batch_69c06253534c8190aafe70a6cf5a67ec |
completed | March 22, 2026, 9:42 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d1c3ed827c8190899cb2ae9561765e |
completed | April 5, 2026, 2:07 a.m. |
| NEDg | Description generation | batch_69d1c49053d08190b2bb5dc917785b6e |
completed | April 5, 2026, 2:10 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69d1c55139b88190bdebdb989ecc6a9d |
completed | April 5, 2026, 2:13 a.m. |
Created at: March 22, 2026, 4:20 p.m.