Triple

T12120153
Position Surface form Disambiguated ID Type / Status
Subject Amagasaki derailment E288671 entity
Predicate deadliestRailAccidentInJapanSince P103389 FINISHED
Object Sakuragichō train fire
The Sakuragichō train fire was a 1951 railway disaster in Yokohama, Japan, in which an overhead wire caused a blaze that killed more than 100 passengers and led to major safety reforms on Japanese trains.
E962980 NE FINISHED

How this triple was built (5 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: Sakuragichō train fire | Statement: [Amagasaki derailment, deadliestRailAccidentInJapanSince, Sakuragichō train fire]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Sakuragichō train fire
Context triple: [Amagasaki derailment, deadliestRailAccidentInJapanSince, Sakuragichō train fire]
  • A. Amagasaki derailment
    The Amagasaki derailment was a deadly 2005 train accident in Hyōgo Prefecture, Japan, in which a commuter train left the tracks and crashed into an apartment building, prompting major scrutiny of railway safety practices.
  • B. Hibiya Incendiary Incident
    The Hibiya Incendiary Incident was a 1905 anti-government riot in Tokyo sparked by public outrage over the terms of the Treaty of Portsmouth that ended the Russo-Japanese War.
  • C. Daegu subway fire
    The Daegu subway fire was a catastrophic arson attack on a South Korean metro train in 2003 that killed nearly 200 people and led to major reforms in urban rail safety.
  • D. Nagasaki bugyō
    Nagasaki bugyō were high-ranking Tokugawa shogunate officials responsible for administering the port city of Nagasaki and overseeing Japan’s tightly controlled foreign trade and relations during the Edo period.
  • E. Isshi Incident
    The Isshi Incident was a 645 CE coup d'état in Japan in which Prince Naka no Ōe and his allies assassinated the powerful statesman Soga no Iruka, leading to the downfall of the Soga clan and paving the way for major political reforms.
  • 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: Sakuragichō train fire
Triple: [Amagasaki derailment, deadliestRailAccidentInJapanSince, Sakuragichō train fire]
Generated description
The Sakuragichō train fire was a 1951 railway disaster in Yokohama, Japan, in which an overhead wire caused a blaze that killed more than 100 passengers and led to major safety reforms on Japanese trains.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Sakuragichō train fire
Target entity description: The Sakuragichō train fire was a 1951 railway disaster in Yokohama, Japan, in which an overhead wire caused a blaze that killed more than 100 passengers and led to major safety reforms on Japanese trains.
  • A. Amagasaki derailment
    The Amagasaki derailment was a deadly 2005 train accident in Hyōgo Prefecture, Japan, in which a commuter train left the tracks and crashed into an apartment building, prompting major scrutiny of railway safety practices.
  • B. Hibiya Incendiary Incident
    The Hibiya Incendiary Incident was a 1905 anti-government riot in Tokyo sparked by public outrage over the terms of the Treaty of Portsmouth that ended the Russo-Japanese War.
  • C. Daegu subway fire
    The Daegu subway fire was a catastrophic arson attack on a South Korean metro train in 2003 that killed nearly 200 people and led to major reforms in urban rail safety.
  • D. Nagasaki bugyō
    Nagasaki bugyō were high-ranking Tokugawa shogunate officials responsible for administering the port city of Nagasaki and overseeing Japan’s tightly controlled foreign trade and relations during the Edo period.
  • E. Isshi Incident
    The Isshi Incident was a 645 CE coup d'état in Japan in which Prince Naka no Ōe and his allies assassinated the powerful statesman Soga no Iruka, leading to the downfall of the Soga clan and paving the way for major political reforms.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: deadliestRailAccidentInJapanSince
Context triple: [Amagasaki derailment, deadliestRailAccidentInJapanSince, Sakuragichō train fire]
  • A. casualtiesJapan
    Indicates that an event or action resulted in casualties (deaths and/or injuries) occurring in Japan.
  • B. casualtiesJapanKilled
    Indicates that the casualties were individuals from Japan who were killed.
  • C. SeikanTunnelConnects
    Indicates that the Seikan Tunnel serves as a physical connection between two geographic locations or regions.
  • D. JapaneseCasualtiesSurvivors
    Indicates the number or status of Japanese individuals who were casualties but survived an event or conflict.
  • E. officialDeathTollReportedByJapanese
    Indicates that the officially recorded number of deaths was reported by Japanese authorities or sources.
  • F. None of above. chosen

Provenance (7 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_69d6ab4b5e4c81909950b17151eb0951 completed April 8, 2026, 7:23 p.m.
NER Named-entity recognition batch_69d9164ada5081908676bd9e5947268a completed April 10, 2026, 3:24 p.m.
NED1 Entity disambiguation (via context triple) batch_69f5f684172c81908b77daa243dc8ed8 completed May 2, 2026, 1:05 p.m.
NEDg Description generation batch_69f5fdea1afc8190b39557fdc571e300 completed May 2, 2026, 1:36 p.m.
NED2 Entity disambiguation (via description) batch_69f5fef775508190ab3be470821c5a50 completed May 2, 2026, 1:41 p.m.
PD Predicate disambiguation batch_69d9150497408190921334d21503375a completed April 10, 2026, 3:19 p.m.
PDg Predicate description generation batch_69d916481a008190ae66677b9e6dd961 completed April 10, 2026, 3:24 p.m.
Created at: April 8, 2026, 9:49 p.m.