Triple

T2200138
Position Surface form Disambiguated ID Type / Status
Subject Beverly, Chicago E50468 entity
Predicate hasRailStation P726 FINISHED
Object 111th Street–Morgan Park station
111th Street–Morgan Park station is a Metra commuter rail stop on the Rock Island District line serving Chicago’s Beverly and Morgan Park neighborhoods.
 E241120 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: 111th Street–Morgan Park station | Statement: [Beverly, Chicago, hasRailStation, 111th Street–Morgan Park station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: 111th Street–Morgan Park station
Context triple: [Beverly, Chicago, hasRailStation, 111th Street–Morgan Park station]
  • A. Metra Rock Island District 35th Street station
    Metra Rock Island District 35th Street station is a commuter rail stop in Chicago serving the Rock Island District line, located near Guaranteed Rate Field and providing access to the surrounding Bronzeville and Bridgeport areas.
  • B. Blue Island–Vermont Street station
    Blue Island–Vermont Street station is a Metra commuter rail station in Blue Island, Illinois, serving as a key stop on Chicago-area rail lines.
  • C. Oak Park station (Blue Line)
    Oak Park station (Blue Line) is an elevated Chicago Transit Authority rapid transit stop in Oak Park, Illinois, serving the Forest Park branch of the Blue Line.
  • D. Minnesota Avenue station
    Minnesota Avenue station is an elevated Washington Metro stop in Northeast Washington, D.C., serving the Orange Line near the Anacostia River.
  • E. Illinois Medical District station
    Illinois Medical District station is a Chicago Transit Authority rapid transit stop on the Blue Line serving the Illinois Medical District and nearby West Side institutions.
  • 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: 111th Street–Morgan Park station
Triple: [Beverly, Chicago, hasRailStation, 111th Street–Morgan Park station]
Generated description
111th Street–Morgan Park station is a Metra commuter rail stop on the Rock Island District line serving Chicago’s Beverly and Morgan Park neighborhoods.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: 111th Street–Morgan Park station
Target entity description: 111th Street–Morgan Park station is a Metra commuter rail stop on the Rock Island District line serving Chicago’s Beverly and Morgan Park neighborhoods.
  • A. Metra Rock Island District 35th Street station
    Metra Rock Island District 35th Street station is a commuter rail stop in Chicago serving the Rock Island District line, located near Guaranteed Rate Field and providing access to the surrounding Bronzeville and Bridgeport areas.
  • B. Blue Island–Vermont Street station
    Blue Island–Vermont Street station is a Metra commuter rail station in Blue Island, Illinois, serving as a key stop on Chicago-area rail lines.
  • C. Oak Park station (Blue Line)
    Oak Park station (Blue Line) is an elevated Chicago Transit Authority rapid transit stop in Oak Park, Illinois, serving the Forest Park branch of the Blue Line.
  • D. Minnesota Avenue station
    Minnesota Avenue station is an elevated Washington Metro stop in Northeast Washington, D.C., serving the Orange Line near the Anacostia River.
  • E. Illinois Medical District station
    Illinois Medical District station is a Chicago Transit Authority rapid transit stop on the Blue Line serving the Illinois Medical District and nearby West Side institutions.
  • 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_69a88b044ab48190add007487680f009 completed March 4, 2026, 7:41 p.m.
NER Named-entity recognition batch_69abbfa06bb4819092d7021358846e5f completed March 7, 2026, 6:03 a.m.
NED1 Entity disambiguation (via context triple) batch_69ae5dbb6e8481908610337cfd2a4bd1 completed March 9, 2026, 5:42 a.m.
NEDg Description generation batch_69ae5e4a45a08190bd96af6cda06ab35 completed March 9, 2026, 5:44 a.m.
NED2 Entity disambiguation (via description) batch_69ae5ec5a5b88190b80fc3607d2c789c completed March 9, 2026, 5:46 a.m.
Created at: March 4, 2026, 7:46 p.m.