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.