Triple

T2790301
Position Surface form Disambiguated ID Type / Status
Subject Northern line E61912 entity
Predicate terminus P388 FINISHED
Object Morden
Morden is a suburban district in the London Borough of Merton, best known as the southern terminus of the London Underground’s Northern line.
 E298516 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: Morden | Statement: [Northern line, terminus, Morden]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Morden
Context triple: [Northern line, terminus, Morden]
  • A. Catford
    Catford is a district in southeast London, England, known as the administrative center of the London Borough of Lewisham.
  • B. Portchester
    Portchester is a village in Hampshire, England, known for its historic Roman fort and as the birthplace of author Neil Gaiman.
  • C. Upminster
    Upminster is a suburban town in East London that serves as a key transport hub and residential area on the eastern edge of Greater London.
  • D. Redhill
    Redhill is a commuter town in southeast England known for its transport links and proximity to London within the county of Surrey.
  • E. Enfield
    Enfield is a historic town in north London that developed from a Middlesex market settlement into a major suburban and commercial center.
  • 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: Morden
Triple: [Northern line, terminus, Morden]
Generated description
Morden is a suburban district in the London Borough of Merton, best known as the southern terminus of the London Underground’s Northern line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Morden
Target entity description: Morden is a suburban district in the London Borough of Merton, best known as the southern terminus of the London Underground’s Northern line.
  • A. Catford
    Catford is a district in southeast London, England, known as the administrative center of the London Borough of Lewisham.
  • B. Portchester
    Portchester is a village in Hampshire, England, known for its historic Roman fort and as the birthplace of author Neil Gaiman.
  • C. Upminster
    Upminster is a suburban town in East London that serves as a key transport hub and residential area on the eastern edge of Greater London.
  • D. Redhill
    Redhill is a commuter town in southeast England known for its transport links and proximity to London within the county of Surrey.
  • E. Enfield
    Enfield is a historic town in north London that developed from a Middlesex market settlement into a major suburban and commercial center.
  • 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_69ab4b7f51d881908768300ebd2fbdae completed March 6, 2026, 9:47 p.m.
NER Named-entity recognition batch_69abddb4ef3081909122840a357801bf completed March 7, 2026, 8:11 a.m.
NED1 Entity disambiguation (via context triple) batch_69afc65c1f848190b6efeefb64a3e131 completed March 10, 2026, 7:21 a.m.
NEDg Description generation batch_69afc6e6d4bc81908108fe24677448c3 completed March 10, 2026, 7:23 a.m.
NED2 Entity disambiguation (via description) batch_69afc7907be88190b70458ed735261e8 completed March 10, 2026, 7:26 a.m.
Created at: March 6, 2026, 9:58 p.m.