Triple

T10511186
Position Surface form Disambiguated ID Type / Status
Subject Clark/Lake station (CTA) E247917 entity
Predicate hasElevatedSection P46657 FINISHED
Object Lake Street elevated (Loop elevated)
The Lake Street elevated, part of Chicago’s historic Loop elevated railway, is an elevated rapid transit line that carries CTA trains along Lake Street through downtown Chicago.
E868097 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: Lake Street elevated (Loop elevated) | Statement: [Clark/Lake station (CTA), hasElevatedSection, Lake Street elevated (Loop elevated)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Lake Street elevated (Loop elevated)
Context triple: [Clark/Lake station (CTA), hasElevatedSection, Lake Street elevated (Loop elevated)]
  • A. Washington Street Elevated
    Washington Street Elevated was a former elevated rapid transit line in Boston that once carried Orange Line trains along Washington Street through several neighborhoods.
  • B. Wabash Avenue (east side of Loop)
    Wabash Avenue (east side of Loop) is a major north–south street in downtown Chicago’s Loop, known for running beneath the elevated train tracks and forming the Loop’s eastern boundary.
  • C. Desplaines Street, Chicago
    Desplaines Street in Chicago is an urban thoroughfare on the Near West Side known for hosting the relocated Maxwell Street Market and its vibrant street-vendor culture.
  • D. Lake Street/Midtown Station
    Lake Street/Midtown Station is a light rail transit stop in Minneapolis, Minnesota, serving the METRO Blue Line and the surrounding Lake Street and Midtown neighborhoods.
  • E. North Avenue, Chicago
    North Avenue in Chicago is a major east–west thoroughfare on the city’s North Side, known for its commercial corridors, heavy traffic, and role as a key boundary between neighborhoods.
  • 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: Lake Street elevated (Loop elevated)
Triple: [Clark/Lake station (CTA), hasElevatedSection, Lake Street elevated (Loop elevated)]
Generated description
The Lake Street elevated, part of Chicago’s historic Loop elevated railway, is an elevated rapid transit line that carries CTA trains along Lake Street through downtown Chicago.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Lake Street elevated (Loop elevated)
Target entity description: The Lake Street elevated, part of Chicago’s historic Loop elevated railway, is an elevated rapid transit line that carries CTA trains along Lake Street through downtown Chicago.
  • A. Washington Street Elevated
    Washington Street Elevated was a former elevated rapid transit line in Boston that once carried Orange Line trains along Washington Street through several neighborhoods.
  • B. Wabash Avenue (east side of Loop)
    Wabash Avenue (east side of Loop) is a major north–south street in downtown Chicago’s Loop, known for running beneath the elevated train tracks and forming the Loop’s eastern boundary.
  • C. Desplaines Street, Chicago
    Desplaines Street in Chicago is an urban thoroughfare on the Near West Side known for hosting the relocated Maxwell Street Market and its vibrant street-vendor culture.
  • D. Lake Street/Midtown Station
    Lake Street/Midtown Station is a light rail transit stop in Minneapolis, Minnesota, serving the METRO Blue Line and the surrounding Lake Street and Midtown neighborhoods.
  • E. North Avenue, Chicago
    North Avenue in Chicago is a major east–west thoroughfare on the city’s North Side, known for its commercial corridors, heavy traffic, and role as a key boundary between neighborhoods.
  • 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_69d381c4aa948190942e1d803143fb0e completed April 6, 2026, 9:49 a.m.
NER Named-entity recognition batch_69d509b542088190868531f84deaf9e4 completed April 7, 2026, 1:42 p.m.
NED1 Entity disambiguation (via context triple) batch_69d8dcee1db081908c791867e2438d30 completed April 10, 2026, 11:20 a.m.
NEDg Description generation batch_69d8e8ca94508190a2a6beca7f01fbd8 completed April 10, 2026, 12:10 p.m.
NED2 Entity disambiguation (via description) batch_69d9020bce488190b78e555cdd5caec4 completed April 10, 2026, 1:58 p.m.
Created at: April 6, 2026, 12:27 p.m.