Triple

T800351
Position Surface form Disambiguated ID Type / Status
Subject Chicago Union Station E17115 entity
Predicate connectsTo P845 FINISHED
Object SouthWest Service line
The SouthWest Service line is a Metra commuter rail route in the Chicago metropolitan area that provides passenger service between downtown Chicago and southwestern suburbs.
E94374 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: SouthWest Service line | Statement: [Chicago Union Station, connectsTo, SouthWest Service line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: SouthWest Service line
Context triple: [Chicago Union Station, connectsTo, SouthWest Service line]
  • A. Westside Express Service
    Westside Express Service is a commuter rail line in the Portland, Oregon metropolitan area that connects suburban communities along the region’s west side.
  • B. Valley Lines
    Valley Lines is a suburban rail network serving Cardiff and the surrounding South Wales Valleys.
  • C. Southern Linc
    Southern Linc is a regional wireless communications provider in the southeastern United States, offering mission-critical voice and data services, particularly for utilities and public safety organizations.
  • D. MARC Penn Line
    The MARC Penn Line is a Maryland commuter rail service that runs along the Amtrak Northeast Corridor between Washington, D.C., and Perryville, serving numerous communities in Prince George’s County and beyond.
  • E. Panhandle Route
    The Panhandle Route was a major American railroad line operated by the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad that connected key Midwestern and Eastern cities as part of the Pennsylvania Railroad system.
  • 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: SouthWest Service line
Triple: [Chicago Union Station, connectsTo, SouthWest Service line]
Generated description
The SouthWest Service line is a Metra commuter rail route in the Chicago metropolitan area that provides passenger service between downtown Chicago and southwestern suburbs.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: SouthWest Service line
Target entity description: The SouthWest Service line is a Metra commuter rail route in the Chicago metropolitan area that provides passenger service between downtown Chicago and southwestern suburbs.
  • A. Westside Express Service
    Westside Express Service is a commuter rail line in the Portland, Oregon metropolitan area that connects suburban communities along the region’s west side.
  • B. Valley Lines
    Valley Lines is a suburban rail network serving Cardiff and the surrounding South Wales Valleys.
  • C. Southern Linc
    Southern Linc is a regional wireless communications provider in the southeastern United States, offering mission-critical voice and data services, particularly for utilities and public safety organizations.
  • D. MARC Penn Line
    The MARC Penn Line is a Maryland commuter rail service that runs along the Amtrak Northeast Corridor between Washington, D.C., and Perryville, serving numerous communities in Prince George’s County and beyond.
  • E. Panhandle Route
    The Panhandle Route was a major American railroad line operated by the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad that connected key Midwestern and Eastern cities as part of the Pennsylvania Railroad system.
  • 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_69a49378b9c48190adbf5f62e5b7aca1 completed March 1, 2026, 7:28 p.m.
NER Named-entity recognition batch_69a4a7cb26dc8190bdd3a278b8695873 completed March 1, 2026, 8:55 p.m.
NED1 Entity disambiguation (via context triple) batch_69a67f02a1ec81909027b4c515f107f1 completed March 3, 2026, 6:26 a.m.
NEDg Description generation batch_69a67f5a246481908bde953b245a6b5e completed March 3, 2026, 6:27 a.m.
NED2 Entity disambiguation (via description) batch_69a6808fe5748190b95959ee23ee6241 completed March 3, 2026, 6:32 a.m.
Created at: March 1, 2026, 7:38 p.m.