Triple

T22065842

Position	Surface form	Disambiguated ID	Type / Status
Subject	Pennsylvania Railroad tracks	`E545265`	entity
Predicate	includesMajorRoute	`P89731`	FINISHED
Object	Pittsburgh–St. Louis line The Pittsburgh–St. Louis line was a major Pennsylvania Railroad route connecting Pittsburgh, Pennsylvania, with St. Louis, Missouri, serving as an important east–west passenger and freight corridor in the United States.	`E1519689`	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: Pittsburgh–St. Louis line | Statement: [Pennsylvania Railroad tracks, includesMajorRoute, Pittsburgh–St. Louis line]

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

Target entity: Pittsburgh–St. Louis line
Context triple: [Pennsylvania Railroad tracks, includesMajorRoute, Pittsburgh–St. Louis line]

A. Pittsburgh–Chicago route
The Pittsburgh–Chicago route was a major Pennsylvania Railroad passenger and freight corridor linking the industrial centers of Pittsburgh, Pennsylvania, and Chicago, Illinois.
B. Chicago–Omaha main line
The Chicago–Omaha main line was a principal transcontinental rail corridor in the Midwestern United States, linking Chicago with Omaha and serving as a key route for both passenger and freight traffic.
C. Chicago–Buffalo main line
The Chicago–Buffalo main line was a key intercity rail corridor linking Chicago and Buffalo, serving as a major route for passenger and freight traffic across the Midwest and into the Northeast.
D. Chicago–St. Louis rail corridor
The Chicago–St. Louis rail corridor is a major Midwestern passenger and freight rail route linking Chicago, Illinois, with St. Louis, Missouri, and serving as a key component of the region’s transportation network.
E. New York–Chicago main line
The New York–Chicago main line was a principal intercity rail corridor in the United States that connected the East Coast metropolis of New York City with the Midwestern hub of Chicago.
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: Pittsburgh–St. Louis line
Triple: [Pennsylvania Railroad tracks, includesMajorRoute, Pittsburgh–St. Louis line]

Generated description

The Pittsburgh–St. Louis line was a major Pennsylvania Railroad route connecting Pittsburgh, Pennsylvania, with St. Louis, Missouri, serving as an important east–west passenger and freight corridor in the United States.

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

Target entity: Pittsburgh–St. Louis line
Target entity description: The Pittsburgh–St. Louis line was a major Pennsylvania Railroad route connecting Pittsburgh, Pennsylvania, with St. Louis, Missouri, serving as an important east–west passenger and freight corridor in the United States.

A. Pittsburgh–Chicago route
The Pittsburgh–Chicago route was a major Pennsylvania Railroad passenger and freight corridor linking the industrial centers of Pittsburgh, Pennsylvania, and Chicago, Illinois.
B. Chicago–Omaha main line
The Chicago–Omaha main line was a principal transcontinental rail corridor in the Midwestern United States, linking Chicago with Omaha and serving as a key route for both passenger and freight traffic.
C. Chicago–Buffalo main line
The Chicago–Buffalo main line was a key intercity rail corridor linking Chicago and Buffalo, serving as a major route for passenger and freight traffic across the Midwest and into the Northeast.
D. Chicago–St. Louis rail corridor
The Chicago–St. Louis rail corridor is a major Midwestern passenger and freight rail route linking Chicago, Illinois, with St. Louis, Missouri, and serving as a key component of the region’s transportation network.
E. New York–Chicago main line
The New York–Chicago main line was a principal intercity rail corridor in the United States that connected the East Coast metropolis of New York City with the Midwestern hub of Chicago.
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_69e11e344dfc81909b1d88a7221329c7`	completed	April 16, 2026, 5:36 p.m.
NER	Named-entity recognition	`batch_69f12883d2108190a6127783f8f635fc`	completed	April 28, 2026, 9:37 p.m.
NED1	Entity disambiguation (via context triple)	`batch_6a0a8f0d245c819080bce1791e584843`	completed	May 18, 2026, 4:01 a.m.
NEDg	Description generation	`batch_6a0a924f9c0081909e33d6900675495b`	completed	May 18, 2026, 4:15 a.m.
NED2	Entity disambiguation (via description)	`batch_6a0a92f3ac948190893088711a300610`	completed	May 18, 2026, 4:17 a.m.

Created at: April 16, 2026, 8:27 p.m.