Triple

T17822915
Position Surface form Disambiguated ID Type / Status
Subject Hoosier State E445033 entity
Predicate railwayLineUsed P848 FINISHED
Object CSX Transportation trackage between Chicago and Indianapolis
CSX Transportation trackage between Chicago and Indianapolis is a freight rail corridor in the Midwestern United States that also carries passenger services such as Amtrak’s Hoosier State.
E1289293 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: CSX Transportation trackage between Chicago and Indianapolis | Statement: [Hoosier State, railwayLineUsed, CSX Transportation trackage between Chicago and Indianapolis]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: CSX Transportation trackage between Chicago and Indianapolis
Context triple: [Hoosier State, railwayLineUsed, CSX Transportation trackage between Chicago and Indianapolis]
  • A. Norfolk Southern trackage in Indiana and Illinois
    Norfolk Southern trackage in Indiana and Illinois is a segment of the freight railroad’s Midwestern rail network that also hosts intercity passenger services such as Amtrak’s Wolverine route.
  • B. Norfolk Southern Chicago Line
    The Norfolk Southern Chicago Line is a major freight rail corridor in the Midwestern United States, forming part of Norfolk Southern Railway’s primary east–west route through the Chicago area.
  • C. Chicago–San Antonio rail corridor
    The Chicago–San Antonio rail corridor is a long-distance passenger rail route in the central United States that links Chicago, Illinois, with San Antonio, Texas, passing through major Midwestern and Southern cities.
  • D. Indianapolis–Michigan City line
    The Indianapolis–Michigan City line was a key north–south route of the Monon Railroad in Indiana, connecting the state capital with the Lake Michigan region and serving both passenger and freight traffic.
  • E. Chicago–South Bend corridor
    The Chicago–South Bend corridor is a regional passenger rail route linking the Chicago metropolitan area with South Bend, Indiana, via intermediate communities in northern Indiana.
  • 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: CSX Transportation trackage between Chicago and Indianapolis
Triple: [Hoosier State, railwayLineUsed, CSX Transportation trackage between Chicago and Indianapolis]
Generated description
CSX Transportation trackage between Chicago and Indianapolis is a freight rail corridor in the Midwestern United States that also carries passenger services such as Amtrak’s Hoosier State.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: CSX Transportation trackage between Chicago and Indianapolis
Target entity description: CSX Transportation trackage between Chicago and Indianapolis is a freight rail corridor in the Midwestern United States that also carries passenger services such as Amtrak’s Hoosier State.
  • A. Norfolk Southern trackage in Indiana and Illinois
    Norfolk Southern trackage in Indiana and Illinois is a segment of the freight railroad’s Midwestern rail network that also hosts intercity passenger services such as Amtrak’s Wolverine route.
  • B. Norfolk Southern Chicago Line
    The Norfolk Southern Chicago Line is a major freight rail corridor in the Midwestern United States, forming part of Norfolk Southern Railway’s primary east–west route through the Chicago area.
  • C. Chicago–San Antonio rail corridor
    The Chicago–San Antonio rail corridor is a long-distance passenger rail route in the central United States that links Chicago, Illinois, with San Antonio, Texas, passing through major Midwestern and Southern cities.
  • D. Indianapolis–Michigan City line
    The Indianapolis–Michigan City line was a key north–south route of the Monon Railroad in Indiana, connecting the state capital with the Lake Michigan region and serving both passenger and freight traffic.
  • E. Chicago–South Bend corridor
    The Chicago–South Bend corridor is a regional passenger rail route linking the Chicago metropolitan area with South Bend, Indiana, via intermediate communities in northern Indiana.
  • 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_69d8b9f0de78819099395b14db75a8a6 completed April 10, 2026, 8:50 a.m.
NER Named-entity recognition batch_69e4891282a081908d384d45bf444baf completed April 19, 2026, 7:49 a.m.
NED1 Entity disambiguation (via context triple) batch_6a02ff69f02c81908a7b6b8b564cceec completed May 12, 2026, 10:22 a.m.
NEDg Description generation batch_6a03000abe908190a4f4835f348aa544 completed May 12, 2026, 10:25 a.m.
NED2 Entity disambiguation (via description) batch_6a0300e885e481909c76dfbac2fd1009 completed May 12, 2026, 10:28 a.m.
Created at: April 10, 2026, 10:15 a.m.