Triple

T11698719
Position Surface form Disambiguated ID Type / Status
Subject Chicago South Shore and South Bend Railroad E278064 entity
Predicate historicalChicagoTerminal P101319 FINISHED
Object Illinois Central Railroad terminal
The Illinois Central Railroad terminal was a major passenger rail hub in downtown Chicago that served as a key gateway for regional and long-distance trains in the late 19th and early 20th centuries.
E939694 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: Illinois Central Railroad terminal | Statement: [Chicago South Shore and South Bend Railroad, historicalChicagoTerminal, Illinois Central Railroad terminal]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Illinois Central Railroad terminal
Context triple: [Chicago South Shore and South Bend Railroad, historicalChicagoTerminal, Illinois Central Railroad terminal]
  • A. Chicago, Burlington and Quincy Railroad station
    Chicago, Burlington and Quincy Railroad station was the original name of what is now known as Hinsdale station, a historic commuter rail stop in Hinsdale, Illinois that once served the CB&Q Railroad.
  • B. Randolph/Wabash station
    Randolph/Wabash station was a former elevated Chicago "L" station in the Loop that served multiple train lines before being closed and replaced by the modern Washington/Wabash station.
  • C. Peoria station
    Peoria station is a commuter rail stop in the Denver metropolitan area that serves as part of the A Line connecting downtown Denver with Denver International Airport.
  • D. Washington/Wabash station
    Washington/Wabash station is a Chicago 'L' rapid transit station in the Loop that serves multiple elevated lines and replaced the former Randolph/Wabash and Madison/Wabash stations.
  • E. Illinois Terminal (multimodal transportation center)
    Illinois Terminal is a major multimodal transportation center in Champaign, Illinois, serving as a hub for intercity buses, Amtrak trains, and local transit services.
  • 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: Illinois Central Railroad terminal
Triple: [Chicago South Shore and South Bend Railroad, historicalChicagoTerminal, Illinois Central Railroad terminal]
Generated description
The Illinois Central Railroad terminal was a major passenger rail hub in downtown Chicago that served as a key gateway for regional and long-distance trains in the late 19th and early 20th centuries.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Illinois Central Railroad terminal
Target entity description: The Illinois Central Railroad terminal was a major passenger rail hub in downtown Chicago that served as a key gateway for regional and long-distance trains in the late 19th and early 20th centuries.
  • A. Chicago, Burlington and Quincy Railroad station
    Chicago, Burlington and Quincy Railroad station was the original name of what is now known as Hinsdale station, a historic commuter rail stop in Hinsdale, Illinois that once served the CB&Q Railroad.
  • B. Randolph/Wabash station
    Randolph/Wabash station was a former elevated Chicago "L" station in the Loop that served multiple train lines before being closed and replaced by the modern Washington/Wabash station.
  • C. Peoria station
    Peoria station is a commuter rail stop in the Denver metropolitan area that serves as part of the A Line connecting downtown Denver with Denver International Airport.
  • D. Washington/Wabash station
    Washington/Wabash station is a Chicago 'L' rapid transit station in the Loop that serves multiple elevated lines and replaced the former Randolph/Wabash and Madison/Wabash stations.
  • E. Illinois Terminal (multimodal transportation center)
    Illinois Terminal is a major multimodal transportation center in Champaign, Illinois, serving as a hub for intercity buses, Amtrak trains, and local transit services.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: historicalChicagoTerminal
Context triple: [Chicago South Shore and South Bend Railroad, historicalChicagoTerminal, Illinois Central Railroad terminal]
  • A. historicalTerminus
    Indicates that one entity serves as the historically recognized endpoint or final limit of another entity, such as a route, period, or process.
  • B. designatedChicagoLandmark
    Indicates that an entity has been officially recognized and designated as a Chicago landmark.
  • C. terminusStation
    Indicates that a station serves as the final endpoint or terminal stop for a given route or service.
  • D. communityAreaOfChicago
    Indicates that a given entity is one of the officially designated community areas within the city of Chicago.
  • E. ChicagoLandmarkDesignationYear
    Indicates the year in which an entity was officially designated as a Chicago landmark.
  • F. None of above. chosen

Provenance (7 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_69d6aafe02d881909900d54ad7d4af84 completed April 8, 2026, 7:22 p.m.
NER Named-entity recognition batch_69d8a47df68c81908a91919a69b4880d completed April 10, 2026, 7:19 a.m.
NED1 Entity disambiguation (via context triple) batch_69ef147e2e10819085eaed83fd955b6b completed April 27, 2026, 7:47 a.m.
NEDg Description generation batch_69ef3553a1748190b554463bcea8bd1d completed April 27, 2026, 10:07 a.m.
NED2 Entity disambiguation (via description) batch_69ef51fe3824819099f440426d3e6888 completed April 27, 2026, 12:09 p.m.
PD Predicate disambiguation batch_69d88a7b30948190b616a9db5c5488d5 completed April 10, 2026, 5:28 a.m.
PDg Predicate description generation batch_69d89546a8688190b51455b5e12caf91 completed April 10, 2026, 6:14 a.m.
Created at: April 8, 2026, 9:40 p.m.