Triple

T8089755
Position Surface form Disambiguated ID Type / Status
Subject Hokuriku Shinkansen E188825 entity
Predicate notableStructure P1544 FINISHED
Object Usui Pass tunnel system
The Usui Pass tunnel system is a series of long railway tunnels in Japan that carry high-speed Shinkansen trains through the mountainous Usui Pass region.
 E711348 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: Usui Pass tunnel system | Statement: [Hokuriku Shinkansen, notableStructure, Usui Pass tunnel system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Usui Pass tunnel system
Context triple: [Hokuriku Shinkansen, notableStructure, Usui Pass tunnel system]
  • A. Kanmon Tunnel
    The Kanmon Tunnel is an undersea railway and road tunnel in Japan that links the islands of Honshu and Kyushu beneath the Kanmon Straits.
  • B. Furka Base Tunnel
    The Furka Base Tunnel is a long railway tunnel in the Swiss Alps that provides an all-weather, low-level route beneath the Furka Pass, improving connectivity and reliability on the Matterhorn Gotthard Bahn line.
  • C. Seto Ohashi Bridge system
    The Seto Ohashi Bridge system is a series of double-deck road-and-rail suspension and cable-stayed bridges in Japan that spans the Seto Inland Sea, linking the islands of Honshu and Shikoku.
  • D. Kaichu-doro causeway
    The Kaichu-doro causeway is a scenic marine roadway in Okinawa that connects the main island to several offshore islands by traversing shallow, turquoise coastal waters.
  • E. Ohashi
    Ohashi is a neighborhood within Tokyo’s Meguro ward, known as a residential area with convenient urban access.
  • 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: Usui Pass tunnel system
Triple: [Hokuriku Shinkansen, notableStructure, Usui Pass tunnel system]
Generated description
The Usui Pass tunnel system is a series of long railway tunnels in Japan that carry high-speed Shinkansen trains through the mountainous Usui Pass region.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Usui Pass tunnel system
Target entity description: The Usui Pass tunnel system is a series of long railway tunnels in Japan that carry high-speed Shinkansen trains through the mountainous Usui Pass region.
  • A. Kanmon Tunnel
    The Kanmon Tunnel is an undersea railway and road tunnel in Japan that links the islands of Honshu and Kyushu beneath the Kanmon Straits.
  • B. Furka Base Tunnel
    The Furka Base Tunnel is a long railway tunnel in the Swiss Alps that provides an all-weather, low-level route beneath the Furka Pass, improving connectivity and reliability on the Matterhorn Gotthard Bahn line.
  • C. Seto Ohashi Bridge system
    The Seto Ohashi Bridge system is a series of double-deck road-and-rail suspension and cable-stayed bridges in Japan that spans the Seto Inland Sea, linking the islands of Honshu and Shikoku.
  • D. Kaichu-doro causeway
    The Kaichu-doro causeway is a scenic marine roadway in Okinawa that connects the main island to several offshore islands by traversing shallow, turquoise coastal waters.
  • E. Ohashi
    Ohashi is a neighborhood within Tokyo’s Meguro ward, known as a residential area with convenient urban access.
  • 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_69ca82b7b3e88190b9041ab0ef28b3cb completed March 30, 2026, 2:03 p.m.
NER Named-entity recognition batch_69cb421e30e88190b9699b338b69b81c completed March 31, 2026, 3:40 a.m.
NED1 Entity disambiguation (via context triple) batch_69cc640a42648190bc1a3072eb338e22 completed April 1, 2026, 12:17 a.m.
NEDg Description generation batch_69cc68d9032c8190af6c5ff64fe46aff completed April 1, 2026, 12:37 a.m.
NED2 Entity disambiguation (via description) batch_69cc69f6bb308190a95df95d1a67cfec completed April 1, 2026, 12:42 a.m.
Created at: March 30, 2026, 5:29 p.m.