Triple

T16294230

Position	Surface form	Disambiguated ID	Type / Status
Subject	Polly Ann Trail	`E395605`	entity
Predicate	formerRailroad	`P30332`	FINISHED
Object	Grand Trunk Western Railroad line The Grand Trunk Western Railroad line was a major regional rail route in the Midwestern United States, historically operated by the Grand Trunk Western Railroad as part of its freight and passenger network.	`E1205733`	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: Grand Trunk Western Railroad line | Statement: [Polly Ann Trail, formerRailroad, Grand Trunk Western Railroad line]

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

Target entity: Grand Trunk Western Railroad line
Context triple: [Polly Ann Trail, formerRailroad, Grand Trunk Western Railroad line]

A. BNSF Railway line
The BNSF Railway line is a major freight and passenger rail corridor operated by BNSF Railway that runs through multiple Midwestern and Western states in the United States.
B. Grand Trunk Pacific Railway
The Grand Trunk Pacific Railway was an early 20th-century Canadian transcontinental railway that played a key role in opening Western Canada to settlement and trade before its assets were absorbed into the national rail system.
C. Great Western Main Line
The Great Western Main Line is a major intercity railway route in England that connects London with key cities in the west, including Bristol and South Wales.
D. Burlington Northern Santa Fe Railway main line
The Burlington Northern Santa Fe Railway main line is a major transcontinental freight rail corridor in the United States that carries heavy rail traffic across key western routes, including the desert region near Needles, California.
E. Canadian Pacific Railway mainline
The Canadian Pacific Railway mainline is a major transcontinental rail corridor that forms a key freight and passenger transportation route across Canada, including through Northern Ontario.
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: Grand Trunk Western Railroad line
Triple: [Polly Ann Trail, formerRailroad, Grand Trunk Western Railroad line]

Generated description

The Grand Trunk Western Railroad line was a major regional rail route in the Midwestern United States, historically operated by the Grand Trunk Western Railroad as part of its freight and passenger network.

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

Target entity: Grand Trunk Western Railroad line
Target entity description: The Grand Trunk Western Railroad line was a major regional rail route in the Midwestern United States, historically operated by the Grand Trunk Western Railroad as part of its freight and passenger network.

A. BNSF Railway line
The BNSF Railway line is a major freight and passenger rail corridor operated by BNSF Railway that runs through multiple Midwestern and Western states in the United States.
B. Grand Trunk Pacific Railway
The Grand Trunk Pacific Railway was an early 20th-century Canadian transcontinental railway that played a key role in opening Western Canada to settlement and trade before its assets were absorbed into the national rail system.
C. Great Western Main Line
The Great Western Main Line is a major intercity railway route in England that connects London with key cities in the west, including Bristol and South Wales.
D. Burlington Northern Santa Fe Railway main line
The Burlington Northern Santa Fe Railway main line is a major transcontinental freight rail corridor in the United States that carries heavy rail traffic across key western routes, including the desert region near Needles, California.
E. Canadian Pacific Railway mainline
The Canadian Pacific Railway mainline is a major transcontinental rail corridor that forms a key freight and passenger transportation route across Canada, including through Northern Ontario.
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_69d87f22c7248190a54c949738441e2e`	completed	April 10, 2026, 4:40 a.m.
NER	Named-entity recognition	`batch_69e25e2c255881909d99c43770475329`	completed	April 17, 2026, 4:22 p.m.
NED1	Entity disambiguation (via context triple)	`batch_6a001f9965b8819080278ccef15288aa`	completed	May 10, 2026, 6:03 a.m.
NEDg	Description generation	`batch_6a0021459c4081908e4c1d2e0bc8a5be`	completed	May 10, 2026, 6:10 a.m.
NED2	Entity disambiguation (via description)	`batch_6a0022247e908190842ca6186b4e9c4c`	completed	May 10, 2026, 6:13 a.m.

Created at: April 10, 2026, 5:05 a.m.