Triple
T8363237
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Narita Airport Terminal 1 Station |
E197060
|
entity |
| Predicate | railwayLine |
P848
|
FINISHED |
| Object |
Keisei Main Line (airport access branch)
The Keisei Main Line (airport access branch) is a rail route in Japan operated by Keisei Electric Railway that provides direct train services between central Tokyo and Narita International Airport.
|
E730369
|
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: Keisei Main Line (airport access branch) | Statement: [Narita Airport Terminal 1 Station, railwayLine, Keisei Main Line (airport access branch)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Keisei Main Line (airport access branch) Context triple: [Narita Airport Terminal 1 Station, railwayLine, Keisei Main Line (airport access branch)]
-
A.
Keikyū Airport Line
The Keikyū Airport Line is a railway line in the Tokyo area that provides direct train access between central Tokyo and Haneda Airport.
-
B.
Narita Line (urban section)
Narita Line (urban section) is a commuter rail line in the Greater Tokyo area operated by JR East, connecting central Chiba with Narita and serving as part of the region’s urban rail network.
-
C.
Tōkyū Ōimachi Line
The Tōkyū Ōimachi Line is a major commuter railway line in Tokyo operated by Tokyu Corporation, connecting central Tokyo areas such as Ōimachi and Futako-Tamagawa with surrounding residential districts.
-
D.
Tobu Isesaki Line
The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
-
E.
Tōkyū Ikegami Line
The Tōkyū Ikegami Line is a commuter railway line in Tokyo operated by Tokyu Corporation, connecting residential areas in Ōta Ward with central districts such as Shinagawa.
- 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: Keisei Main Line (airport access branch) Triple: [Narita Airport Terminal 1 Station, railwayLine, Keisei Main Line (airport access branch)]
Generated description
The Keisei Main Line (airport access branch) is a rail route in Japan operated by Keisei Electric Railway that provides direct train services between central Tokyo and Narita International Airport.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Keisei Main Line (airport access branch) Target entity description: The Keisei Main Line (airport access branch) is a rail route in Japan operated by Keisei Electric Railway that provides direct train services between central Tokyo and Narita International Airport.
-
A.
Keikyū Airport Line
The Keikyū Airport Line is a railway line in the Tokyo area that provides direct train access between central Tokyo and Haneda Airport.
-
B.
Narita Line (urban section)
Narita Line (urban section) is a commuter rail line in the Greater Tokyo area operated by JR East, connecting central Chiba with Narita and serving as part of the region’s urban rail network.
-
C.
Tōkyū Ōimachi Line
The Tōkyū Ōimachi Line is a major commuter railway line in Tokyo operated by Tokyu Corporation, connecting central Tokyo areas such as Ōimachi and Futako-Tamagawa with surrounding residential districts.
-
D.
Tobu Isesaki Line
The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
-
E.
Tōkyū Ikegami Line
The Tōkyū Ikegami Line is a commuter railway line in Tokyo operated by Tokyu Corporation, connecting residential areas in Ōta Ward with central districts such as Shinagawa.
- 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_69ca82f2dbe48190aba982e75a0d94de |
completed | March 30, 2026, 2:04 p.m. |
| NER | Named-entity recognition | batch_69cb80768b208190a5f6c9e6cb6e7f30 |
completed | March 31, 2026, 8:06 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69cde7c747b48190b1979b4eaf281df5 |
completed | April 2, 2026, 3:51 a.m. |
| NEDg | Description generation | batch_69cdebf81adc81908feb7b19b5b151c3 |
completed | April 2, 2026, 4:09 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69cdecc83e408190b9ba1dc8acf5081b |
completed | April 2, 2026, 4:12 a.m. |
Created at: March 30, 2026, 6 p.m.