Triple

T19253190
Position Surface form Disambiguated ID Type / Status
Subject Illini (Amtrak) E481446 entity
Predicate usesRailroad P522 FINISHED
Object CN Champaign Subdivision — NE NERFINISHED

How this triple was built (3 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: CN Champaign Subdivision | Statement: [Illini (Amtrak), usesRailroad, CN Champaign Subdivision]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: CN Champaign Subdivision
Context triple: [Illini (Amtrak), usesRailroad, CN Champaign Subdivision]
  • A. CN Joliet Subdivision
    CN Joliet Subdivision is a Canadian National Railway freight rail line in the Joliet, Illinois area that also carries Metra’s Heritage Corridor commuter trains.
  • B. Fox–Sauk–Kickapoo branch
    The Fox–Sauk–Kickapoo branch is a subgroup of the Algonquian language family that includes the closely related Fox, Sauk, and Kickapoo languages traditionally spoken in the Great Lakes and central United States region.
  • C. BNSF Chillicothe Subdivision
    The BNSF Chillicothe Subdivision is a major freight rail line in Illinois operated by BNSF Railway, forming part of a key transcontinental route between the Midwest and the West Coast.
  • D. Chicago–La Grange corridor
    The Chicago–La Grange corridor is a key suburban rail route west of Chicago that has long served as a major commuter link between the city and its western suburbs.
  • E. CPKC Milwaukee Subdivision
    The CPKC Milwaukee Subdivision is a freight rail line in the Chicago–Milwaukee corridor owned and operated by Canadian Pacific Kansas City, also used by commuter services such as Metra.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: CN Champaign Subdivision
Target entity description: CN Champaign Subdivision is a Canadian National Railway line in Illinois that serves as a key route for both freight traffic and Amtrak passenger trains, including the Illini.
  • A. CN Joliet Subdivision
    CN Joliet Subdivision is a Canadian National Railway freight rail line in the Joliet, Illinois area that also carries Metra’s Heritage Corridor commuter trains.
  • B. Fox–Sauk–Kickapoo branch
    The Fox–Sauk–Kickapoo branch is a subgroup of the Algonquian language family that includes the closely related Fox, Sauk, and Kickapoo languages traditionally spoken in the Great Lakes and central United States region.
  • C. BNSF Chillicothe Subdivision
    The BNSF Chillicothe Subdivision is a major freight rail line in Illinois operated by BNSF Railway, forming part of a key transcontinental route between the Midwest and the West Coast.
  • D. Chicago–La Grange corridor
    The Chicago–La Grange corridor is a key suburban rail route west of Chicago that has long served as a major commuter link between the city and its western suburbs.
  • E. CPKC Milwaukee Subdivision
    The CPKC Milwaukee Subdivision is a freight rail line in the Chicago–Milwaukee corridor owned and operated by Canadian Pacific Kansas City, also used by commuter services such as Metra.
  • F. None of above. chosen

Provenance (2 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_69d8e8cd9d1081908a181d02b88b59b8 completed April 10, 2026, 12:10 p.m.
NER Named-entity recognition batch_69e5fb3339648190a87d38ce42aff016 completed April 20, 2026, 10:08 a.m.
Created at: April 10, 2026, 1:28 p.m.