Triple

T6350299

Position	Surface form	Disambiguated ID	Type / Status
Subject	British Rail Engineering Limited	`E142851`	entity
Predicate	notableWork	`P4`	FINISHED
Object	British Rail Class 318 electric multiple units The British Rail Class 318 electric multiple units are suburban EMU trains introduced in the mid-1980s for commuter services around Glasgow, Scotland, featuring steel-bodied construction and 25 kV AC overhead electrification.	`E643534`	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: British Rail Class 318 electric multiple units | Statement: [British Rail Engineering Limited, notableWork, British Rail Class 318 electric multiple units]

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

Target entity: British Rail Class 318 electric multiple units
Context triple: [British Rail Engineering Limited, notableWork, British Rail Class 318 electric multiple units]

A. British Rail Class 317 electric multiple units
The British Rail Class 317 electric multiple units are a series of suburban electric trains introduced in the early 1980s for commuter services around London, known for their steel-bodied Mark 3–derived design and long service life.
B. British Rail Class 323
The British Rail Class 323 is a type of electric multiple unit train widely used on suburban and commuter rail services in the West Midlands and North West England.
C. British Rail Class 387
The British Rail Class 387 is a fleet of modern electric multiple-unit trains used on high-speed commuter and airport services in the UK.
D. British Rail Class 325
The British Rail Class 325 is an electric multiple unit train type designed specifically for high-speed postal and parcel services on the UK rail network.
E. British Rail Class 365
The British Rail Class 365 is a fleet of electric multiple-unit passenger trains built in the mid-1990s for suburban and regional services in southeast England and on the East Coast Main Line.
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: British Rail Class 318 electric multiple units
Triple: [British Rail Engineering Limited, notableWork, British Rail Class 318 electric multiple units]

Generated description

The British Rail Class 318 electric multiple units are suburban EMU trains introduced in the mid-1980s for commuter services around Glasgow, Scotland, featuring steel-bodied construction and 25 kV AC overhead electrification.

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

Target entity: British Rail Class 318 electric multiple units
Target entity description: The British Rail Class 318 electric multiple units are suburban EMU trains introduced in the mid-1980s for commuter services around Glasgow, Scotland, featuring steel-bodied construction and 25 kV AC overhead electrification.

A. British Rail Class 317 electric multiple units
The British Rail Class 317 electric multiple units are a series of suburban electric trains introduced in the early 1980s for commuter services around London, known for their steel-bodied Mark 3–derived design and long service life.
B. British Rail Class 323
The British Rail Class 323 is a type of electric multiple unit train widely used on suburban and commuter rail services in the West Midlands and North West England.
C. British Rail Class 387
The British Rail Class 387 is a fleet of modern electric multiple-unit trains used on high-speed commuter and airport services in the UK.
D. British Rail Class 325
The British Rail Class 325 is an electric multiple unit train type designed specifically for high-speed postal and parcel services on the UK rail network.
E. British Rail Class 365
The British Rail Class 365 is a fleet of electric multiple-unit passenger trains built in the mid-1990s for suburban and regional services in southeast England and on the East Coast Main Line.
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_69c008d6dcbc8190aa1c2f1fd8916b42`	completed	March 22, 2026, 3:20 p.m.
NER	Named-entity recognition	`batch_69c067bcec2c8190bb383605847b0f0b`	completed	March 22, 2026, 10:05 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69c7a303b960819082981f0efbdce014`	completed	March 28, 2026, 9:44 a.m.
NEDg	Description generation	`batch_69c7a446c5088190908dd7b4cdc57f18`	completed	March 28, 2026, 9:49 a.m.
NED2	Entity disambiguation (via description)	`batch_69c7a4fc9f788190b38437c6e91a5f8a`	completed	March 28, 2026, 9:53 a.m.

Created at: March 22, 2026, 4:31 p.m.