Triple

T4401007

Position	Surface form	Disambiguated ID	Type / Status
Subject	Stone Arch Bridge	`E93614`	entity
Predicate	owner	`P347`	FINISHED
Object	Hennepin County Regional Railroad Authority The Hennepin County Regional Railroad Authority is a governmental body in Hennepin County, Minnesota responsible for acquiring, preserving, and managing rail corridors and related transportation infrastructure.	`E436857`	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: Hennepin County Regional Railroad Authority | Statement: [Stone Arch Bridge, owner, Hennepin County Regional Railroad Authority]

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

Target entity: Hennepin County Regional Railroad Authority
Context triple: [Stone Arch Bridge, owner, Hennepin County Regional Railroad Authority]

A. Sangamon Mass Transit District
Sangamon Mass Transit District is the primary public bus transportation agency serving Springfield and surrounding areas in Sangamon County, Illinois.
B. Chicago North Shore and Milwaukee Railroad
The Chicago North Shore and Milwaukee Railroad was an interurban electric railway that operated between Chicago and Milwaukee, providing high-speed commuter and intercity service along the Lake Michigan shoreline in the early to mid-20th century.
C. Champaign–Urbana Mass Transit District
The Champaign–Urbana Mass Transit District is the primary public bus system serving the Champaign–Urbana metropolitan area and the University of Illinois campus in Illinois.
D. Regional Transportation Authority of Northeastern Illinois
The Regional Transportation Authority of Northeastern Illinois is the oversight and funding agency that coordinates public transit services, including those of the Chicago Transit Authority, across the Chicago metropolitan area.
E. Madison Metro
Madison Metro is the primary public bus transit system serving the city of Madison, Wisconsin and its surrounding communities.
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: Hennepin County Regional Railroad Authority
Triple: [Stone Arch Bridge, owner, Hennepin County Regional Railroad Authority]

Generated description

The Hennepin County Regional Railroad Authority is a governmental body in Hennepin County, Minnesota responsible for acquiring, preserving, and managing rail corridors and related transportation infrastructure.

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

Target entity: Hennepin County Regional Railroad Authority
Target entity description: The Hennepin County Regional Railroad Authority is a governmental body in Hennepin County, Minnesota responsible for acquiring, preserving, and managing rail corridors and related transportation infrastructure.

A. Sangamon Mass Transit District
Sangamon Mass Transit District is the primary public bus transportation agency serving Springfield and surrounding areas in Sangamon County, Illinois.
B. Chicago North Shore and Milwaukee Railroad
The Chicago North Shore and Milwaukee Railroad was an interurban electric railway that operated between Chicago and Milwaukee, providing high-speed commuter and intercity service along the Lake Michigan shoreline in the early to mid-20th century.
C. Champaign–Urbana Mass Transit District
The Champaign–Urbana Mass Transit District is the primary public bus system serving the Champaign–Urbana metropolitan area and the University of Illinois campus in Illinois.
D. Regional Transportation Authority of Northeastern Illinois
The Regional Transportation Authority of Northeastern Illinois is the oversight and funding agency that coordinates public transit services, including those of the Chicago Transit Authority, across the Chicago metropolitan area.
E. Madison Metro
Madison Metro is the primary public bus transit system serving the city of Madison, Wisconsin and its surrounding communities.
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_69b345158c748190a2c040fce2da9980`	completed	March 12, 2026, 10:58 p.m.
NER	Named-entity recognition	`batch_69b352cf218481908d072fec58361f28`	completed	March 12, 2026, 11:57 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69b5f5f788d081909406a938337bd05a`	completed	March 14, 2026, 11:57 p.m.
NEDg	Description generation	`batch_69b5f674c94c81908327336dd4380d2e`	completed	March 14, 2026, 11:59 p.m.
NED2	Entity disambiguation (via description)	`batch_69b5f719d008819090a35e3597a0089f`	completed	March 15, 2026, 12:02 a.m.

Created at: March 12, 2026, 11:28 p.m.