Triple

T11831830
Position Surface form Disambiguated ID Type / Status
Subject Sendai Subway E281409 entity
Predicate serves P98 FINISHED
Object Sendai metropolitan area
The Sendai metropolitan area is a major urban and economic center in Japan’s Tōhoku region, anchored by the city of Sendai and its surrounding municipalities.
 E980013 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: Sendai metropolitan area | Statement: [Sendai Subway, serves, Sendai metropolitan area]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Sendai metropolitan area
Context triple: [Sendai Subway, serves, Sendai metropolitan area]
  • A. Yamagata metropolitan area
    The Yamagata metropolitan area is an urban and economic region in Yamagata Prefecture, Japan, centered on the city of Yamagata and its surrounding municipalities.
  • B. Yokohama metropolitan area
    The Yokohama metropolitan area is a major urban and economic region in Japan centered on the port city of Yokohama and its surrounding municipalities within the Greater Tokyo area.
  • C. Hiroshima metropolitan area
    The Hiroshima metropolitan area is the urban and economic region centered on the city of Hiroshima in western Honshu, Japan, encompassing its surrounding cities and suburbs.
  • D. Sapporo metropolitan area
    The Sapporo metropolitan area is the large urban and economic center surrounding the city of Sapporo on Japan’s northern island of Hokkaido, encompassing its suburbs and neighboring municipalities.
  • E. Chūkyō metropolitan area
    The Chūkyō metropolitan area is Japan’s third-largest urban and industrial region, centered on Nagoya and known as a major hub for automotive manufacturing and international trade.
  • 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: Sendai metropolitan area
Triple: [Sendai Subway, serves, Sendai metropolitan area]
Generated description
The Sendai metropolitan area is a major urban and economic center in Japan’s Tōhoku region, anchored by the city of Sendai and its surrounding municipalities.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Sendai metropolitan area
Target entity description: The Sendai metropolitan area is a major urban and economic center in Japan’s Tōhoku region, anchored by the city of Sendai and its surrounding municipalities.
  • A. Yamagata metropolitan area
    The Yamagata metropolitan area is an urban and economic region in Yamagata Prefecture, Japan, centered on the city of Yamagata and its surrounding municipalities.
  • B. Yokohama metropolitan area
    The Yokohama metropolitan area is a major urban and economic region in Japan centered on the port city of Yokohama and its surrounding municipalities within the Greater Tokyo area.
  • C. Hiroshima metropolitan area
    The Hiroshima metropolitan area is the urban and economic region centered on the city of Hiroshima in western Honshu, Japan, encompassing its surrounding cities and suburbs.
  • D. Sapporo metropolitan area
    The Sapporo metropolitan area is the large urban and economic center surrounding the city of Sapporo on Japan’s northern island of Hokkaido, encompassing its suburbs and neighboring municipalities.
  • E. Chūkyō metropolitan area
    The Chūkyō metropolitan area is Japan’s third-largest urban and industrial region, centered on Nagoya and known as a major hub for automotive manufacturing and international trade.
  • 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_69d6ab276f8c8190b1966a0ef11349ac completed April 8, 2026, 7:23 p.m.
NER Named-entity recognition batch_69d8a62c95988190a45dbaa7001c8846 completed April 10, 2026, 7:26 a.m.
NED1 Entity disambiguation (via context triple) batch_69f6344d86648190ad270517b36c8815 completed May 2, 2026, 5:28 p.m.
NEDg Description generation batch_69f6356b545c819089a5f5b901afc5f2 completed May 2, 2026, 5:33 p.m.
NED2 Entity disambiguation (via description) batch_69f636382ffc8190becfae41757a45d8 completed May 2, 2026, 5:36 p.m.
Created at: April 8, 2026, 9:43 p.m.