Triple

T4551191

Position	Surface form	Disambiguated ID	Type / Status
Subject	London and South Western Railway	`E110166`	entity
Predicate	formedFrom	`P402`	FINISHED
Object	London and Southampton Railway The London and Southampton Railway was an early 19th-century British railway company that built and operated the main line linking London with the port city of Southampton.	`E451866`	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: London and Southampton Railway | Statement: [London and South Western Railway, formedFrom, London and Southampton Railway]

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

Target entity: London and Southampton Railway
Context triple: [London and South Western Railway, formedFrom, London and Southampton Railway]

A. London and Birmingham Railway
The London and Birmingham Railway was one of the earliest major trunk railways in England, linking London with the Midlands and forming a key part of the developing national rail network in the 19th century.
B. London and Greenwich Railway
The London and Greenwich Railway was one of the earliest passenger railways in London and the first in the capital to be built on a viaduct, forming a key part of the city's early rail infrastructure.
C. Bristol and Gloucester Railway
The Bristol and Gloucester Railway was a 19th-century English railway line that connected Bristol with Gloucester and later became part of the expanding Midland Railway network.
D. Bristol and Birmingham Railway
The Bristol and Birmingham Railway was a historic British railway line that connected the cities of Bristol and Birmingham and later became part of the Midland Railway network.
E. Liverpool–London railway line
The Liverpool–London railway line is a major intercity rail route in England connecting the city of Liverpool with the capital, London.
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: London and Southampton Railway
Triple: [London and South Western Railway, formedFrom, London and Southampton Railway]

Generated description

The London and Southampton Railway was an early 19th-century British railway company that built and operated the main line linking London with the port city of Southampton.

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

Target entity: London and Southampton Railway
Target entity description: The London and Southampton Railway was an early 19th-century British railway company that built and operated the main line linking London with the port city of Southampton.

A. London and Birmingham Railway
The London and Birmingham Railway was one of the earliest major trunk railways in England, linking London with the Midlands and forming a key part of the developing national rail network in the 19th century.
B. London and Greenwich Railway
The London and Greenwich Railway was one of the earliest passenger railways in London and the first in the capital to be built on a viaduct, forming a key part of the city's early rail infrastructure.
C. Bristol and Gloucester Railway
The Bristol and Gloucester Railway was a 19th-century English railway line that connected Bristol with Gloucester and later became part of the expanding Midland Railway network.
D. Bristol and Birmingham Railway
The Bristol and Birmingham Railway was a historic British railway line that connected the cities of Bristol and Birmingham and later became part of the Midland Railway network.
E. Liverpool–London railway line
The Liverpool–London railway line is a major intercity rail route in England connecting the city of Liverpool with the capital, London.
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_69bd4412524c8190be5bcc9ddee91848`	completed	March 20, 2026, 12:56 p.m.
NER	Named-entity recognition	`batch_69bd57f5a0a081909977ccbb8aba633c`	completed	March 20, 2026, 2:21 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69bdb954393c8190b6ff6a5faa129d09`	completed	March 20, 2026, 9:17 p.m.
NEDg	Description generation	`batch_69bdbe8c545881909fd921cc1736f297`	completed	March 20, 2026, 9:39 p.m.
NED2	Entity disambiguation (via description)	`batch_69bdbf4b2a408190b476e5f898605828`	completed	March 20, 2026, 9:42 p.m.

Created at: March 20, 2026, 1:05 p.m.