Triple

T3629196
Position Surface form Disambiguated ID Type / Status
Subject Pennsylvania Railroad Altoona Works E76912 entity
Predicate railroadShopFor P19147 FINISHED
Object Pennsylvania Railroad locomotives
Pennsylvania Railroad locomotives were the diverse fleet of steam, electric, and diesel engines that powered one of the largest and most influential railroads in the United States throughout the late 19th and early 20th centuries.
E371413 NE FINISHED

How this triple was built (5 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: [Pennsylvania Railroad Altoona Works, railroadShopFor, Pennsylvania Railroad locomotives]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Pennsylvania Railroad locomotives
Context triple: [Pennsylvania Railroad Altoona Works, railroadShopFor, Pennsylvania Railroad locomotives]
  • A. 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.
  • B. Forney locomotive
    The Forney locomotive is a compact 19th-century steam tank locomotive type, notable for its rigid wheelbase and rear-mounted fuel and water tanks, widely used on urban elevated and commuter railways.
  • C. Standard Passenger Pacific of the PRR
    The "Standard Passenger Pacific of the PRR" refers to the Pennsylvania Railroad’s K4s class, a highly successful and iconic 4-6-2 steam locomotive that became the railroad’s primary passenger engine in the early to mid-20th century.
  • D. Locomotive Works
    Locomotive Works is the section of the Derby railway works dedicated to the construction, maintenance, and repair of railway locomotives.
  • E. Amtrak locomotives
    Amtrak locomotives are the diesel and electric engines that power the United States’ national passenger rail services across both short- and long-distance routes.
  • 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: [Pennsylvania Railroad Altoona Works, railroadShopFor, Pennsylvania Railroad locomotives]
Generated description
Pennsylvania Railroad locomotives were the diverse fleet of steam, electric, and diesel engines that powered one of the largest and most influential railroads in the United States throughout the late 19th and early 20th centuries.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Pennsylvania Railroad locomotives
Target entity description: Pennsylvania Railroad locomotives were the diverse fleet of steam, electric, and diesel engines that powered one of the largest and most influential railroads in the United States throughout the late 19th and early 20th centuries.
  • A. 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.
  • B. Forney locomotive
    The Forney locomotive is a compact 19th-century steam tank locomotive type, notable for its rigid wheelbase and rear-mounted fuel and water tanks, widely used on urban elevated and commuter railways.
  • C. Standard Passenger Pacific of the PRR chosen
    The "Standard Passenger Pacific of the PRR" refers to the Pennsylvania Railroad’s K4s class, a highly successful and iconic 4-6-2 steam locomotive that became the railroad’s primary passenger engine in the early to mid-20th century.
  • D. Locomotive Works
    Locomotive Works is the section of the Derby railway works dedicated to the construction, maintenance, and repair of railway locomotives.
  • E. Amtrak locomotives
    Amtrak locomotives are the diesel and electric engines that power the United States’ national passenger rail services across both short- and long-distance routes.
  • F. None of above.
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: railroadShopFor
Context triple: [Pennsylvania Railroad Altoona Works, railroadShopFor, Pennsylvania Railroad locomotives]
  • A. railroadMet
    Indicates that two or more railroads encountered or connected with each other at a specific place or time.
  • B. railroad
    Indicates that one entity constructs, operates, or provides railroad or train transportation services for another entity or area.
  • C. railComponent
    Indicates a relationship where one entity is a structural or functional part of a rail or railway system component of another entity.
  • D. formerRailroad
    Indicates that an entity was previously a railroad but no longer functions as one.
  • E. rollingStockSupplier chosen
    Indicates that one entity supplies or provides rolling stock (such as railway vehicles) to another entity.
  • F. None of above.

Provenance (6 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_69ad85dc03948190b35b7189e4175bcc completed March 8, 2026, 2:21 p.m.
NER Named-entity recognition batch_69adc2df2b708190afef6925a53ec551 completed March 8, 2026, 6:41 p.m.
NED1 Entity disambiguation (via context triple) batch_69b43328931881908bd92cb32a366e93 completed March 13, 2026, 3:54 p.m.
NEDg Description generation batch_69b433a037588190a0629defe365515d completed March 13, 2026, 3:56 p.m.
NED2 Entity disambiguation (via description) batch_69b437493384819084a7213fe754526b completed March 13, 2026, 4:11 p.m.
PD Predicate disambiguation batch_69adb8410a5881909c94818d7060b2b0 completed March 8, 2026, 5:56 p.m.
Created at: March 8, 2026, 3:23 p.m.