Triple

T885323
Position Surface form Disambiguated ID Type / Status
Subject Yellow Line (CTA) E19116 entity
Predicate usesFormerRightOfWay P13660 FINISHED
Object 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.
E104946 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: Chicago North Shore and Milwaukee Railroad | Statement: [Yellow Line (CTA), usesFormerRightOfWay, Chicago North Shore and Milwaukee Railroad]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Chicago North Shore and Milwaukee Railroad
Context triple: [Yellow Line (CTA), usesFormerRightOfWay, Chicago North Shore and Milwaukee Railroad]
  • A. Chicago Aurora and Elgin Railroad
    The Chicago Aurora and Elgin Railroad was an interurban electric railway that once connected Chicago with its western suburbs, playing a key role in regional commuter transit in the early to mid-20th century.
  • B. 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.
  • C. Calumet and South Chicago Railway Company
    The Calumet and South Chicago Railway Company was a street railway operator that provided transit services in Chicago’s South Side and surrounding industrial areas in the early 20th century.
  • D. South Shore Line
    The South Shore Line is an electric commuter rail service connecting Chicago with communities in northern Indiana, including Gary.
  • E. Grand Rapids and Indiana Railroad
    The Grand Rapids and Indiana Railroad was a historic rail line in the Midwestern United States that connected southern Michigan and northern Indiana to resort and timber regions along Lake Michigan and into northern Michigan.
  • 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 North Shore and Milwaukee Railroad
Triple: [Yellow Line (CTA), usesFormerRightOfWay, Chicago North Shore and Milwaukee Railroad]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Chicago North Shore and Milwaukee Railroad
Target entity description: 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.
  • A. Chicago Aurora and Elgin Railroad
    The Chicago Aurora and Elgin Railroad was an interurban electric railway that once connected Chicago with its western suburbs, playing a key role in regional commuter transit in the early to mid-20th century.
  • B. 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.
  • C. Calumet and South Chicago Railway Company
    The Calumet and South Chicago Railway Company was a street railway operator that provided transit services in Chicago’s South Side and surrounding industrial areas in the early 20th century.
  • D. South Shore Line
    The South Shore Line is an electric commuter rail service connecting Chicago with communities in northern Indiana, including Gary.
  • E. Grand Rapids and Indiana Railroad
    The Grand Rapids and Indiana Railroad was a historic rail line in the Midwestern United States that connected southern Michigan and northern Indiana to resort and timber regions along Lake Michigan and into northern Michigan.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: usesFormerRightOfWay
Context triple: [Yellow Line (CTA), usesFormerRightOfWay, Chicago North Shore and Milwaukee Railroad]
  • A. someRightOfWayUsedBy chosen
    Indicates that a particular right of way is utilized or traversed by a specified user, route, or transport entity.
  • B. hasApproachRoad
    Indicates that one entity is connected to or accessed by another entity via an approach road leading to it.
  • C. builtAcrossStreetFrom
    Indicates that one structure was constructed on the opposite side of a street directly facing another structure.
  • D. hadRight
    Indicates that an entity possessed a legal or moral entitlement to perform an action, access something, or claim something in relation to another entity or situation.
  • E. maySitByRight
    Indicates that an entity has the right or permission to sit next 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_69a4939c32488190a7ccd41cf0abb22b completed March 1, 2026, 7:29 p.m.
NER Named-entity recognition batch_69a4ae787bf081909533082ca013624a completed March 1, 2026, 9:24 p.m.
NED1 Entity disambiguation (via context triple) batch_69a7c01f00f48190b954db4a0cb5baa8 completed March 4, 2026, 5:16 a.m.
NEDg Description generation batch_69a7c088506c81908a9e8ac91cb5b69d completed March 4, 2026, 5:18 a.m.
NED2 Entity disambiguation (via description) batch_69a7c10b114c8190831a95519dd185a2 completed March 4, 2026, 5:20 a.m.
PD Predicate disambiguation batch_69a4aa8ff8c48190a33b00acf65c1276 completed March 1, 2026, 9:07 p.m.
Created at: March 1, 2026, 7:39 p.m.