Triple

T14985207

Position	Surface form	Disambiguated ID	Type / Status
Subject	PRR E8	`E373681`	entity
Predicate	category	`P87`	FINISHED
Object	Pennsylvania Railroad locomotives Pennsylvania Railroad locomotives are the various steam, electric, and diesel engines that powered the trains of the historic Pennsylvania Railroad, one of the largest and most influential railroads in the United States.	`E1130509`	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: Pennsylvania Railroad locomotives | Statement: [PRR E8, category, Pennsylvania Railroad locomotives]

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

Target entity: Pennsylvania Railroad locomotives
Context triple: [PRR E8, category, Pennsylvania Railroad locomotives]

A. Baltimore and Ohio Railroad locomotives
Baltimore and Ohio Railroad locomotives are the various steam and later diesel and electric engines that powered one of the United States’ earliest and most historically significant railroads.
B. Pennsylvania Railroad freight cars
Pennsylvania Railroad freight cars were the rolling stock used by the Pennsylvania Railroad to transport goods across its extensive rail network in the United States.
C. Pennsylvania Railroad passenger cars
Pennsylvania Railroad passenger cars were the fleet of rail coaches used by the Pennsylvania Railroad to carry passengers across its extensive network in the United States.
D. Pennsylvania Railroad Altoona Works
Pennsylvania Railroad Altoona Works was a major locomotive and railcar manufacturing and maintenance complex in Altoona, Pennsylvania, renowned as one of the most important railroad shops in the United States.
E. Pennsylvania Railroad laboratories
Pennsylvania Railroad laboratories were the research and testing facilities of the Pennsylvania Railroad, where scientific and engineering studies were conducted to improve railroad materials, equipment, and operations.
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: Pennsylvania Railroad locomotives
Triple: [PRR E8, category, Pennsylvania Railroad locomotives]

Generated description

Pennsylvania Railroad locomotives are the various steam, electric, and diesel engines that powered the trains of the historic Pennsylvania Railroad, one of the largest and most influential railroads in the United States.

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

Target entity: Pennsylvania Railroad locomotives
Target entity description: Pennsylvania Railroad locomotives are the various steam, electric, and diesel engines that powered the trains of the historic Pennsylvania Railroad, one of the largest and most influential railroads in the United States.

A. Baltimore and Ohio Railroad locomotives
Baltimore and Ohio Railroad locomotives are the various steam and later diesel and electric engines that powered one of the United States’ earliest and most historically significant railroads.
B. Pennsylvania Railroad freight cars
Pennsylvania Railroad freight cars were the rolling stock used by the Pennsylvania Railroad to transport goods across its extensive rail network in the United States.
C. Pennsylvania Railroad passenger cars
Pennsylvania Railroad passenger cars were the fleet of rail coaches used by the Pennsylvania Railroad to carry passengers across its extensive network in the United States.
D. Pennsylvania Railroad Altoona Works
Pennsylvania Railroad Altoona Works was a major locomotive and railcar manufacturing and maintenance complex in Altoona, Pennsylvania, renowned as one of the most important railroad shops in the United States.
E. Pennsylvania Railroad laboratories
Pennsylvania Railroad laboratories were the research and testing facilities of the Pennsylvania Railroad, where scientific and engineering studies were conducted to improve railroad materials, equipment, and operations.
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_69d85ccc84388190aa151e5173370c8d`	completed	April 10, 2026, 2:13 a.m.
NER	Named-entity recognition	`batch_69ded6ff4a7c8190ab7554f3a1a09b67`	completed	April 15, 2026, 12:08 a.m.
NED1	Entity disambiguation (via context triple)	`batch_69fe8bf136e88190b3d812f50233c640`	completed	May 9, 2026, 1:20 a.m.
NEDg	Description generation	`batch_69fe908c25c88190be07a8e12a5cd70b`	completed	May 9, 2026, 1:40 a.m.
NED2	Entity disambiguation (via description)	`batch_69fe9136938081908290c0dfbf140c63`	completed	May 9, 2026, 1:43 a.m.

Created at: April 10, 2026, 2:52 a.m.