Triple

T3569454
Position Surface form Disambiguated ID Type / Status
Subject Udham Singh E75531 entity
Predicate executionPlace P24295 FINISHED
Object HM Prison Pentonville
HM Prison Pentonville is a historic Category B men's prison in North London, England, known for housing high-profile inmates and carrying out executions in the 19th and 20th centuries.
 E369942 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: HM Prison Pentonville | Statement: [Udham Singh, executionPlace, HM Prison Pentonville]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: HM Prison Pentonville
Context triple: [Udham Singh, executionPlace, HM Prison Pentonville]
  • A. HM Prison Belmarsh
    HM Prison Belmarsh is a high-security men's prison in southeast London known for holding high-profile and terrorism-related inmates.
  • B. Wakefield Prison
    Wakefield Prison is a high-security men’s prison in West Yorkshire, England, known for holding some of the country’s most dangerous and high-profile inmates.
  • C. HM Prison Maze
    HM Prison Maze was a high-security Northern Irish prison notorious for housing paramilitary prisoners during the Troubles and serving as the focal point of the 1981 republican hunger strikes.
  • D. HM Prison Maidstone
    HM Prison Maidstone is a Category C men's prison in Maidstone, Kent, England, primarily housing foreign national offenders.
  • E. Werl Prison
    Werl Prison is a correctional facility in Werl, Germany, historically used by the Allies after World War II to incarcerate high-ranking Nazi war criminals.
  • 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: HM Prison Pentonville
Triple: [Udham Singh, executionPlace, HM Prison Pentonville]
Generated description
HM Prison Pentonville is a historic Category B men's prison in North London, England, known for housing high-profile inmates and carrying out executions in the 19th and 20th centuries.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: HM Prison Pentonville
Target entity description: HM Prison Pentonville is a historic Category B men's prison in North London, England, known for housing high-profile inmates and carrying out executions in the 19th and 20th centuries.
  • A. HM Prison Belmarsh
    HM Prison Belmarsh is a high-security men's prison in southeast London known for holding high-profile and terrorism-related inmates.
  • B. Wakefield Prison
    Wakefield Prison is a high-security men’s prison in West Yorkshire, England, known for holding some of the country’s most dangerous and high-profile inmates.
  • C. HM Prison Maze
    HM Prison Maze was a high-security Northern Irish prison notorious for housing paramilitary prisoners during the Troubles and serving as the focal point of the 1981 republican hunger strikes.
  • D. HM Prison Maidstone
    HM Prison Maidstone is a Category C men's prison in Maidstone, Kent, England, primarily housing foreign national offenders.
  • E. Werl Prison
    Werl Prison is a correctional facility in Werl, Germany, historically used by the Allies after World War II to incarcerate high-ranking Nazi war criminals.
  • 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_69ad85d512708190829c8b2d3a2ccfb8 completed March 8, 2026, 2:21 p.m.
NER Named-entity recognition batch_69adc0c1ecb081909051bcc1f38eea31 completed March 8, 2026, 6:32 p.m.
NED1 Entity disambiguation (via context triple) batch_69b3bbb3383c8190b14845a7de162502 completed March 13, 2026, 7:24 a.m.
NEDg Description generation batch_69b3bc62e1b481908310d7af56fb4889 completed March 13, 2026, 7:27 a.m.
NED2 Entity disambiguation (via description) batch_69b3f5b2fdcc8190842d2d7bd09c65c4 completed March 13, 2026, 11:32 a.m.
Created at: March 8, 2026, 3:21 p.m.