Triple

T3040082
Position Surface form Disambiguated ID Type / Status
Subject Nagoya Station E83103 entity
Predicate servedBy P82 FINISHED
Object Meitetsu Nagoya Main Line
The Meitetsu Nagoya Main Line is a major private railway line in Japan’s Chubu region that connects Nagoya with surrounding cities and serves as a key commuter and intercity route.
 E525362 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: Meitetsu Nagoya Main Line | Statement: [Nagoya Station, servedBy, Meitetsu Nagoya Main Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Meitetsu Nagoya Main Line
Context triple: [Nagoya Station, servedBy, Meitetsu Nagoya Main Line]
  • A. 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.
  • 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. Nagasaki Main Line
    The Nagasaki Main Line is a major railway corridor in Kyushu, Japan, connecting key cities including Nagasaki and Fukuoka and now operated by JR Kyushu.
  • D. Tanagawa Line
    The Tanagawa Line is a short commuter railway line in Osaka Prefecture, Japan, operated by Nankai Electric Railway and serving local passengers near the coastal area.
  • E. Saikyō Line
    The Saikyō Line is a major JR East railway line in the Tokyo metropolitan area that connects central Tokyo with Saitama Prefecture, serving as a key commuter route.
  • 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: Meitetsu Nagoya Main Line
Triple: [Nagoya Station, servedBy, Meitetsu Nagoya Main Line]
Generated description
The Meitetsu Nagoya Main Line is a major private railway line in Japan’s Chubu region that connects Nagoya with surrounding cities and serves as a key commuter and intercity route.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Meitetsu Nagoya Main Line
Target entity description: The Meitetsu Nagoya Main Line is a major private railway line in Japan’s Chubu region that connects Nagoya with surrounding cities and serves as a key commuter and intercity route.
  • A. 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.
  • 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. Nagasaki Main Line
    The Nagasaki Main Line is a major railway corridor in Kyushu, Japan, connecting key cities including Nagasaki and Fukuoka and now operated by JR Kyushu.
  • D. Tanagawa Line
    The Tanagawa Line is a short commuter railway line in Osaka Prefecture, Japan, operated by Nankai Electric Railway and serving local passengers near the coastal area.
  • E. Saikyō Line
    The Saikyō Line is a major JR East railway line in the Tokyo metropolitan area that connects central Tokyo with Saitama Prefecture, serving as a key commuter route.
  • 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_69ad8b2298908190a7cb4e9bdbf064d0 completed March 8, 2026, 2:43 p.m.
NER Named-entity recognition batch_69ad9b59fea8819091796e30812df9c5 completed March 8, 2026, 3:52 p.m.
NED1 Entity disambiguation (via context triple) batch_69bf8bb93044819094d61035355c08f0 completed March 22, 2026, 6:27 a.m.
NEDg Description generation batch_69bf8c2278088190891dace4d0d4d360 completed March 22, 2026, 6:28 a.m.
NED2 Entity disambiguation (via description) batch_69bf8c883c3081909bfc56ea125fc9fc completed March 22, 2026, 6:30 a.m.
Created at: March 8, 2026, 3:01 p.m.