Triple

T19855902
Position Surface form Disambiguated ID Type / Status
Subject Dearborn Station E477130 entity
Predicate railwayTerminusFor P21210 FINISHED
Object Chicago and Western Indiana Railroad
The Chicago and Western Indiana Railroad was a terminal railroad company in Chicago that provided joint access and terminal facilities, including Dearborn Station, to several major railroads entering the city.
E1400374 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 and Western Indiana Railroad | Statement: [Dearborn Station, railwayTerminusFor, Chicago and Western Indiana Railroad]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Chicago and Western Indiana Railroad
Context triple: [Dearborn Station, railwayTerminusFor, Chicago and Western Indiana Railroad]
  • A. Chicago South Shore and South Bend Railroad
    The Chicago South Shore and South Bend Railroad is an interurban electric railroad in the Midwest that historically operated passenger and freight service between Chicago, Illinois, and South Bend, Indiana.
  • B. Chicago, Indianapolis and Louisville Railway
    The Chicago, Indianapolis and Louisville Railway, commonly known as the Monon Railroad, was a regional railroad that connected key Midwestern cities and played a significant role in the transportation network of Indiana and surrounding states in the late 19th and early 20th centuries.
  • C. Illinois Central Railroad
    The Illinois Central Railroad was a major American rail carrier that played a pivotal role in connecting the Midwest to the Gulf of Mexico and fostering economic development along its north–south route.
  • D. Chicago and Eastern Illinois Railroad
    The Chicago and Eastern Illinois Railroad was a regional U.S. railroad that primarily served Illinois and neighboring states, later becoming part of the Missouri Pacific (MoPac) system.
  • E. Illinois Terminal Railroad
    Illinois Terminal Railroad was an interurban electric railway system that operated in central Illinois, providing both passenger and freight service during the early to mid-20th century.
  • 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 and Western Indiana Railroad
Triple: [Dearborn Station, railwayTerminusFor, Chicago and Western Indiana Railroad]
Generated description
The Chicago and Western Indiana Railroad was a terminal railroad company in Chicago that provided joint access and terminal facilities, including Dearborn Station, to several major railroads entering the city.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Chicago and Western Indiana Railroad
Target entity description: The Chicago and Western Indiana Railroad was a terminal railroad company in Chicago that provided joint access and terminal facilities, including Dearborn Station, to several major railroads entering the city.
  • A. Chicago South Shore and South Bend Railroad
    The Chicago South Shore and South Bend Railroad is an interurban electric railroad in the Midwest that historically operated passenger and freight service between Chicago, Illinois, and South Bend, Indiana.
  • B. Chicago, Indianapolis and Louisville Railway
    The Chicago, Indianapolis and Louisville Railway, commonly known as the Monon Railroad, was a regional railroad that connected key Midwestern cities and played a significant role in the transportation network of Indiana and surrounding states in the late 19th and early 20th centuries.
  • C. Illinois Central Railroad
    The Illinois Central Railroad was a major American rail carrier that played a pivotal role in connecting the Midwest to the Gulf of Mexico and fostering economic development along its north–south route.
  • D. Chicago and Eastern Illinois Railroad
    The Chicago and Eastern Illinois Railroad was a regional U.S. railroad that primarily served Illinois and neighboring states, later becoming part of the Missouri Pacific (MoPac) system.
  • E. Illinois Terminal Railroad
    Illinois Terminal Railroad was an interurban electric railway system that operated in central Illinois, providing both passenger and freight service during the early to mid-20th century.
  • 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_69d8e51d39d081909bcfafeaaf3d2fcc completed April 10, 2026, 11:55 a.m.
NER Named-entity recognition batch_69e6586c14fc81908d34785f1088b0a9 completed April 20, 2026, 4:46 p.m.
NED1 Entity disambiguation (via context triple) batch_6a07dbbc788881909c8d8d6417182335 completed May 16, 2026, 2:51 a.m.
NEDg Description generation batch_6a07dc57696081908475464010ae707b completed May 16, 2026, 2:54 a.m.
NED2 Entity disambiguation (via description) batch_6a07dcd440b88190b9f44d16f4e06291 completed May 16, 2026, 2:56 a.m.
Created at: April 10, 2026, 1:51 p.m.