Triple

T9823230

Position	Surface form	Disambiguated ID	Type / Status
Subject	Birmingham New Street to Lichfield Trent Valley	`E238586`	entity
Predicate	locatedOnCorridor	`P5520`	FINISHED
Object	Birmingham–Lichfield rail corridor The Birmingham–Lichfield rail corridor is a key suburban and regional railway route in the West Midlands of England, linking central Birmingham with the city of Lichfield and serving as part of the Cross-City Line.	`E822780`	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: Birmingham–Lichfield rail corridor | Statement: [Birmingham New Street to Lichfield Trent Valley, locatedOnCorridor, Birmingham–Lichfield rail corridor]

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

Target entity: Birmingham–Lichfield rail corridor
Context triple: [Birmingham New Street to Lichfield Trent Valley, locatedOnCorridor, Birmingham–Lichfield rail corridor]

A. Birmingham–Shrewsbury line
The Birmingham–Shrewsbury line is a key railway route in England linking the West Midlands city of Birmingham with the historic town of Shrewsbury, providing important regional and intercity passenger services.
B. Birmingham–Kidderminster line
The Birmingham–Kidderminster line is a suburban and regional railway route in the West Midlands of England linking central Birmingham with the town of Kidderminster.
C. Derby–Birmingham line
The Derby–Birmingham line is a key railway route in England linking the East Midlands city of Derby with Birmingham and the wider West Midlands rail network.
D. Birmingham–Stratford-upon-Avon line
The Birmingham–Stratford-upon-Avon line is a regional railway route in England linking Birmingham with the historic town of Stratford-upon-Avon, primarily serving commuter and tourist traffic.
E. London–Bristol rail corridor
The London–Bristol rail corridor is a major intercity railway route in England linking the capital with the city of Bristol via key intermediate towns and lines.
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: Birmingham–Lichfield rail corridor
Triple: [Birmingham New Street to Lichfield Trent Valley, locatedOnCorridor, Birmingham–Lichfield rail corridor]

Generated description

The Birmingham–Lichfield rail corridor is a key suburban and regional railway route in the West Midlands of England, linking central Birmingham with the city of Lichfield and serving as part of the Cross-City Line.

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

Target entity: Birmingham–Lichfield rail corridor
Target entity description: The Birmingham–Lichfield rail corridor is a key suburban and regional railway route in the West Midlands of England, linking central Birmingham with the city of Lichfield and serving as part of the Cross-City Line.

A. Birmingham–Shrewsbury line
The Birmingham–Shrewsbury line is a key railway route in England linking the West Midlands city of Birmingham with the historic town of Shrewsbury, providing important regional and intercity passenger services.
B. Birmingham–Kidderminster line
The Birmingham–Kidderminster line is a suburban and regional railway route in the West Midlands of England linking central Birmingham with the town of Kidderminster.
C. Derby–Birmingham line
The Derby–Birmingham line is a key railway route in England linking the East Midlands city of Derby with Birmingham and the wider West Midlands rail network.
D. Birmingham–Stratford-upon-Avon line
The Birmingham–Stratford-upon-Avon line is a regional railway route in England linking Birmingham with the historic town of Stratford-upon-Avon, primarily serving commuter and tourist traffic.
E. London–Bristol rail corridor
The London–Bristol rail corridor is a major intercity railway route in England linking the capital with the city of Bristol via key intermediate towns and lines.
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_69ca84e0dd1881909800765d1e21f735`	completed	March 30, 2026, 2:12 p.m.
NER	Named-entity recognition	`batch_69cdb315ddf48190bd90f7835f409bb6`	completed	April 2, 2026, 12:06 a.m.
NED1	Entity disambiguation (via context triple)	`batch_69d1cc7ce1908190a5131ef238541f0d`	completed	April 5, 2026, 2:44 a.m.
NEDg	Description generation	`batch_69d1cd0376708190bc68b5f74f476339`	completed	April 5, 2026, 2:46 a.m.
NED2	Entity disambiguation (via description)	`batch_69d1cd70aa5481908b67afef279c38af`	completed	April 5, 2026, 2:48 a.m.

Created at: March 30, 2026, 8:31 p.m.