Triple

T30867957
Position Surface form Disambiguated ID Type / Status
Subject Yankee-class submarine E786254 entity
Predicate notableAccident P22 FINISHED
Object K-219 incident
The K-219 incident was a 1986 Cold War disaster in which a Soviet nuclear ballistic missile submarine suffered a catastrophic missile-tube explosion and subsequent sinking in the Atlantic Ocean, raising serious concerns about nuclear safety and environmental contamination.
 E1936777 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: K-219 incident | Statement: [Yankee-class submarine, notableAccident, K-219 incident]
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: K-219 incident
Triple: [Yankee-class submarine, notableAccident, K-219 incident]
Generated description
The K-219 incident was a 1986 Cold War disaster in which a Soviet nuclear ballistic missile submarine suffered a catastrophic missile-tube explosion and subsequent sinking in the Atlantic Ocean, raising serious concerns about nuclear safety and environmental contamination.

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_69f224b9df2c819086f55f8bcf7f382e completed April 29, 2026, 3:33 p.m.
NER Named-entity recognition batch_69f691adadf4819083f7fd06ecaab732 completed May 3, 2026, 12:07 a.m.
NED1 Entity disambiguation (via context triple) batch_6a28c7d7f2b88190931817993b1a987c completed June 10, 2026, 2:11 a.m.
NEDg Description generation batch_6a28cd294c8c81909253e91c7d947b96 completed June 10, 2026, 2:34 a.m.
NED2 Entity disambiguation (via description) batch_6a28cd8c608c8190938c471d2e1fd8eb completed June 10, 2026, 2:35 a.m.
Created at: April 29, 2026, 8:47 p.m.