Triple

T16470820

Position	Surface form	Disambiguated ID	Type / Status
Subject	British Railways London Midland Region	`E400053`	entity
Predicate	operatedLocomotiveClass	`P67417`	FINISHED
Object	BR Class 40 diesel-electric locomotives The BR Class 40 diesel-electric locomotives were early British mainline diesel engines introduced in the late 1950s, known for their distinctive design and long service on express and freight duties across the UK rail network.	`E1215496`	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: BR Class 40 diesel-electric locomotives | Statement: [British Railways London Midland Region, operatedLocomotiveClass, BR Class 40 diesel-electric locomotives]

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

Target entity: BR Class 40 diesel-electric locomotives
Context triple: [British Railways London Midland Region, operatedLocomotiveClass, BR Class 40 diesel-electric locomotives]

A. Class 57 diesel locomotive
The Class 57 diesel locomotive is a British mainline locomotive type, rebuilt from older Class 47s, widely used for both passenger and freight services including prestigious sleeper and charter trains.
B. CP Class 5600 electric locomotive
The CP Class 5600 is a series of high-powered Portuguese electric locomotives used primarily for fast passenger services on the national rail network.
C. EMD DM30AC locomotives
EMD DM30AC locomotives are dual-mode diesel-electric locomotives built for the Long Island Rail Road, capable of operating in both diesel and third-rail electric modes to serve non-electrified and electrified territory.
D. CP Class 2600 electric locomotive
The CP Class 2600 is a series of Portuguese electric locomotives used primarily for mainline passenger services on the national rail network.
E. EMD GP40
The EMD GP40 is a four-axle diesel-electric locomotive built by Electro-Motive Division in the late 1960s and early 1970s, widely used by North American railroads for freight service.
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: BR Class 40 diesel-electric locomotives
Triple: [British Railways London Midland Region, operatedLocomotiveClass, BR Class 40 diesel-electric locomotives]

Generated description

The BR Class 40 diesel-electric locomotives were early British mainline diesel engines introduced in the late 1950s, known for their distinctive design and long service on express and freight duties across the UK rail network.

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

Target entity: BR Class 40 diesel-electric locomotives
Target entity description: The BR Class 40 diesel-electric locomotives were early British mainline diesel engines introduced in the late 1950s, known for their distinctive design and long service on express and freight duties across the UK rail network.

A. Class 57 diesel locomotive
The Class 57 diesel locomotive is a British mainline locomotive type, rebuilt from older Class 47s, widely used for both passenger and freight services including prestigious sleeper and charter trains.
B. CP Class 5600 electric locomotive
The CP Class 5600 is a series of high-powered Portuguese electric locomotives used primarily for fast passenger services on the national rail network.
C. EMD DM30AC locomotives
EMD DM30AC locomotives are dual-mode diesel-electric locomotives built for the Long Island Rail Road, capable of operating in both diesel and third-rail electric modes to serve non-electrified and electrified territory.
D. CP Class 2600 electric locomotive
The CP Class 2600 is a series of Portuguese electric locomotives used primarily for mainline passenger services on the national rail network.
E. EMD GP40
The EMD GP40 is a four-axle diesel-electric locomotive built by Electro-Motive Division in the late 1960s and early 1970s, widely used by North American railroads for freight service.
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_69d87f2dac988190b74d6e185fa88ba4`	completed	April 10, 2026, 4:40 a.m.
NER	Named-entity recognition	`batch_69e32dd0d2fc81909b68b5afb00f192f`	completed	April 18, 2026, 7:08 a.m.
NED1	Entity disambiguation (via context triple)	`batch_6a004f5af4308190bd023624de35027f`	completed	May 10, 2026, 9:26 a.m.
NEDg	Description generation	`batch_6a0050c5d4548190a674c1c19f08a9fd`	completed	May 10, 2026, 9:32 a.m.
NED2	Entity disambiguation (via description)	`batch_6a0051a7ae208190b33d42cc8d4bb21f`	completed	May 10, 2026, 9:36 a.m.

Created at: April 10, 2026, 5:11 a.m.