Triple

T2388346
Position Surface form Disambiguated ID Type / Status
Subject Princes in the Tower murders E48883 entity
Predicate allegedPerpetrator P21177 FINISHED
Object Henry Stafford, 2nd Duke of Buckingham
Henry Stafford, 2nd Duke of Buckingham, was a powerful 15th-century English nobleman and one-time ally of Richard III who later rebelled against him and was executed, and has been historically suspected as a possible culprit in the disappearance of the Princes in the Tower.
E264920 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: Henry Stafford, 2nd Duke of Buckingham | Statement: [Princes in the Tower murders, allegedPerpetrator, Henry Stafford, 2nd Duke of Buckingham]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Henry Stafford, 2nd Duke of Buckingham
Context triple: [Princes in the Tower murders, allegedPerpetrator, Henry Stafford, 2nd Duke of Buckingham]
  • A. Edmund Tudor, Duke of Somerset
    Edmund Tudor, Duke of Somerset, was a short-lived English prince of the early Tudor dynasty, known primarily as the younger son of King Henry VII of England and Elizabeth of York.
  • B. Thomas Beaufort, Duke of Exeter
    Thomas Beaufort, Duke of Exeter, was an early 15th-century English nobleman, military commander, and half-uncle of King Henry V who played a prominent role in the Hundred Years’ War and royal government.
  • C. George Plantagenet, 1st Duke of Bedford
    George Plantagenet, 1st Duke of Bedford, was a short-lived English royal prince of the House of York, born posthumously to George, Duke of Clarence, and thus a nephew of King Edward IV and cousin to Edward V.
  • D. Edward Seymour, 1st Duke of Somerset
    Edward Seymour, 1st Duke of Somerset, was a powerful English nobleman and uncle to Edward VI who effectively ruled England as Lord Protector during the early years of the young king’s reign.
  • E. Richard Neville, Earl of Warwick
    Richard Neville, Earl of Warwick, known as "the Kingmaker," was a powerful 15th-century English nobleman whose shifting alliances and military influence decisively shaped the dynastic struggle between the houses of York and Lancaster.
  • 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: Henry Stafford, 2nd Duke of Buckingham
Triple: [Princes in the Tower murders, allegedPerpetrator, Henry Stafford, 2nd Duke of Buckingham]
Generated description
Henry Stafford, 2nd Duke of Buckingham, was a powerful 15th-century English nobleman and one-time ally of Richard III who later rebelled against him and was executed, and has been historically suspected as a possible culprit in the disappearance of the Princes in the Tower.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Henry Stafford, 2nd Duke of Buckingham
Target entity description: Henry Stafford, 2nd Duke of Buckingham, was a powerful 15th-century English nobleman and one-time ally of Richard III who later rebelled against him and was executed, and has been historically suspected as a possible culprit in the disappearance of the Princes in the Tower.
  • A. Edmund Tudor, Duke of Somerset
    Edmund Tudor, Duke of Somerset, was a short-lived English prince of the early Tudor dynasty, known primarily as the younger son of King Henry VII of England and Elizabeth of York.
  • B. Thomas Beaufort, Duke of Exeter
    Thomas Beaufort, Duke of Exeter, was an early 15th-century English nobleman, military commander, and half-uncle of King Henry V who played a prominent role in the Hundred Years’ War and royal government.
  • C. George Plantagenet, 1st Duke of Bedford
    George Plantagenet, 1st Duke of Bedford, was a short-lived English royal prince of the House of York, born posthumously to George, Duke of Clarence, and thus a nephew of King Edward IV and cousin to Edward V.
  • D. Edward Seymour, 1st Duke of Somerset
    Edward Seymour, 1st Duke of Somerset, was a powerful English nobleman and uncle to Edward VI who effectively ruled England as Lord Protector during the early years of the young king’s reign.
  • E. Richard Neville, Earl of Warwick
    Richard Neville, Earl of Warwick, known as "the Kingmaker," was a powerful 15th-century English nobleman whose shifting alliances and military influence decisively shaped the dynastic struggle between the houses of York and Lancaster.
  • 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_69a88aa5f63081908d07fd302029fcbd completed March 4, 2026, 7:40 p.m.
NER Named-entity recognition batch_69abd0d942048190bc5c715faa850632 completed March 7, 2026, 7:16 a.m.
NED1 Entity disambiguation (via context triple) batch_69aebf36dcac8190a17d9af8cd1660c4 completed March 9, 2026, 12:38 p.m.
NEDg Description generation batch_69aec32890c881908b5ad14fcafe0e22 completed March 9, 2026, 12:55 p.m.
NED2 Entity disambiguation (via description) batch_69aec3a790c481909698fead81a59938 completed March 9, 2026, 12:57 p.m.
Created at: March 4, 2026, 7:57 p.m.