Triple

T6956256

Position	Surface form	Disambiguated ID	Type / Status
Subject	London Borough of Merton	`E161249`	entity
Predicate	formedFrom	`P402`	FINISHED
Object	Municipal Borough of Mitcham The Municipal Borough of Mitcham was a former local government district in Surrey, England, that administered the town of Mitcham until it was absorbed into Greater London in 1965.	`E634690`	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: Municipal Borough of Mitcham | Statement: [London Borough of Merton, formedFrom, Municipal Borough of Mitcham]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Municipal Borough of Mitcham
Context triple: [London Borough of Merton, formedFrom, Municipal Borough of Mitcham]

A. Municipal Borough of Southall
The Municipal Borough of Southall was a former local government district in west London that administered the rapidly growing suburban town of Southall until its absorption into the London Borough of Ealing in 1965.
B. Municipal Borough of Barnes
The Municipal Borough of Barnes was a former local government district in southwest London that existed until 1965, when it was absorbed into the London Borough of Richmond upon Thames.
C. Merton and Morden Urban District
Merton and Morden Urban District was a former local government district in Surrey, England, that administered the suburban areas of Merton and Morden before their incorporation into Greater London.
D. London Borough of Merton
The London Borough of Merton is a suburban South London borough known for areas like Wimbledon, its mix of residential neighborhoods and green spaces, and strong transport links into central London.
E. London Borough of Wandsworth
The London Borough of Wandsworth is a large, predominantly residential borough in southwest London known for areas like Clapham Junction, Battersea, and Putney, and for its extensive riverside along the River Thames.
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: Municipal Borough of Mitcham
Triple: [London Borough of Merton, formedFrom, Municipal Borough of Mitcham]

Generated description

The Municipal Borough of Mitcham was a former local government district in Surrey, England, that administered the town of Mitcham until it was absorbed into Greater London in 1965.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Municipal Borough of Mitcham
Target entity description: The Municipal Borough of Mitcham was a former local government district in Surrey, England, that administered the town of Mitcham until it was absorbed into Greater London in 1965.

A. Municipal Borough of Southall
The Municipal Borough of Southall was a former local government district in west London that administered the rapidly growing suburban town of Southall until its absorption into the London Borough of Ealing in 1965.
B. Municipal Borough of Barnes
The Municipal Borough of Barnes was a former local government district in southwest London that existed until 1965, when it was absorbed into the London Borough of Richmond upon Thames.
C. Merton and Morden Urban District
Merton and Morden Urban District was a former local government district in Surrey, England, that administered the suburban areas of Merton and Morden before their incorporation into Greater London.
D. London Borough of Merton
The London Borough of Merton is a suburban South London borough known for areas like Wimbledon, its mix of residential neighborhoods and green spaces, and strong transport links into central London.
E. London Borough of Wandsworth
The London Borough of Wandsworth is a large, predominantly residential borough in southwest London known for areas like Clapham Junction, Battersea, and Putney, and for its extensive riverside along the River Thames.
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_69c68852a9a0819097797e31d492e273`	completed	March 27, 2026, 1:38 p.m.
NER	Named-entity recognition	`batch_69c6dacf8c8c8190a25dbacebeb4b66e`	completed	March 27, 2026, 7:30 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69c76a00ded081908db2a4d539e4e502`	completed	March 28, 2026, 5:41 a.m.
NEDg	Description generation	`batch_69c76b78b8048190943a8f89b251f65d`	completed	March 28, 2026, 5:47 a.m.
NED2	Entity disambiguation (via description)	`batch_69c76c01679c8190b61f642c23c25ed5`	completed	March 28, 2026, 5:49 a.m.

Created at: March 27, 2026, 2:29 p.m.