Triple

T35618906

Position	Surface form	Disambiguated ID	Type / Status
Subject	Shigaraki Kōgen Railway	`E1029253`	entity
Predicate	hasAccidentHistory	`P37550`	FINISHED
Object	Shigaraki train disaster The Shigaraki train disaster was a deadly head-on collision between two trains in Shiga Prefecture, Japan, in 1991 that killed dozens of passengers and led to major safety reforms on regional railways.	`E2147407`	NE FINISHED

How this triple was built (2 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: Shigaraki train disaster | Statement: [Shigaraki Kōgen Railway, hasAccidentHistory, Shigaraki train disaster]

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: Shigaraki train disaster
Triple: [Shigaraki Kōgen Railway, hasAccidentHistory, Shigaraki train disaster]

Generated description

The Shigaraki train disaster was a deadly head-on collision between two trains in Shiga Prefecture, Japan, in 1991 that killed dozens of passengers and led to major safety reforms on regional railways.

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_69f76e0709408190bbe322bf1707ef6b`	completed	May 3, 2026, 3:47 p.m.
NER	Named-entity recognition	`batch_69f79eee67e88190b314fdf1124fee29`	completed	May 3, 2026, 7:15 p.m.
NED1	Entity disambiguation (via context triple)	`batch_6a385bf054248190b5f0e93ba34061d0`	completed	June 21, 2026, 9:47 p.m.
NEDg	Description generation	`batch_6a385d4a1b9c81908f8eaca4b6fb952e`	completed	June 21, 2026, 9:53 p.m.
NED2	Entity disambiguation (via description)	`batch_6a385dd6f1808190ab7f9530743cf1d6`	completed	June 21, 2026, 9:55 p.m.

Created at: May 3, 2026, 4:05 p.m.