Triple

T94905
Position Surface form Disambiguated ID Type / Status
Subject Chicago Surface Lines E1908 entity
Predicate operatedBy P86 FINISHED
Object Chicago Railways Company
The Chicago Railways Company was a major early 20th-century street railway operator in Chicago that formed a key part of the city’s urban transit system before consolidation into unified public transportation.
E12509 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: Chicago Railways Company | Statement: [Chicago Surface Lines, operatedBy, Chicago Railways Company]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Chicago Railways Company
Context triple: [Chicago Surface Lines, operatedBy, Chicago Railways Company]
  • A. Pittsburgh, Cincinnati, Chicago and St. Louis Railroad
    The Pittsburgh, Cincinnati, Chicago and St. Louis Railroad was a major Midwestern and Mid-Atlantic rail system that formed a key part of the Pennsylvania Railroad’s network, linking important industrial cities across the region.
  • B. Pennsylvania Railroad Company
    The Pennsylvania Railroad Company was one of the largest and most influential American railroads of the 19th and early 20th centuries, playing a central role in the industrial development of the United States.
  • C. Northern Central Railway
    Northern Central Railway was a historic American railroad that operated primarily in Pennsylvania and Maryland, serving as an important north–south link in the 19th and early 20th centuries.
  • D. Union Pacific Railroad
    Union Pacific Railroad is one of the largest freight rail networks in the United States, operating an extensive system that spans the western two-thirds of the country.
  • E. Chicago Rapid Transit Company
    The Chicago Rapid Transit Company was the private operator of Chicago’s elevated “L” rail system in the early 20th century before public transit was consolidated under the Chicago Transit Authority.
  • 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: Chicago Railways Company
Triple: [Chicago Surface Lines, operatedBy, Chicago Railways Company]
Generated description
The Chicago Railways Company was a major early 20th-century street railway operator in Chicago that formed a key part of the city’s urban transit system before consolidation into unified public transportation.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Chicago Railways Company
Target entity description: The Chicago Railways Company was a major early 20th-century street railway operator in Chicago that formed a key part of the city’s urban transit system before consolidation into unified public transportation.
  • A. Pittsburgh, Cincinnati, Chicago and St. Louis Railroad
    The Pittsburgh, Cincinnati, Chicago and St. Louis Railroad was a major Midwestern and Mid-Atlantic rail system that formed a key part of the Pennsylvania Railroad’s network, linking important industrial cities across the region.
  • B. Pennsylvania Railroad Company
    The Pennsylvania Railroad Company was one of the largest and most influential American railroads of the 19th and early 20th centuries, playing a central role in the industrial development of the United States.
  • C. Northern Central Railway
    Northern Central Railway was a historic American railroad that operated primarily in Pennsylvania and Maryland, serving as an important north–south link in the 19th and early 20th centuries.
  • D. Union Pacific Railroad
    Union Pacific Railroad is one of the largest freight rail networks in the United States, operating an extensive system that spans the western two-thirds of the country.
  • E. Chicago Rapid Transit Company
    The Chicago Rapid Transit Company was the private operator of Chicago’s elevated “L” rail system in the early 20th century before public transit was consolidated under the Chicago Transit Authority.
  • 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_69a24d4862f881908cc8b89d3a78031d completed Feb. 28, 2026, 2:04 a.m.
NER Named-entity recognition batch_69a24fd4777c81909ea9b9a6bd4f7ad5 completed Feb. 28, 2026, 2:15 a.m.
NED1 Entity disambiguation (via context triple) batch_69a284fd52f08190b264937658192e79 completed Feb. 28, 2026, 6:02 a.m.
NEDg Description generation batch_69a289412840819099a731a601d923e2 completed Feb. 28, 2026, 6:20 a.m.
NED2 Entity disambiguation (via description) batch_69a2900e6b908190b048ab21595172a5 completed Feb. 28, 2026, 6:49 a.m.
Created at: Feb. 28, 2026, 2:09 a.m.