Triple

T3942390
Position Surface form Disambiguated ID Type / Status
Subject Amtrak Wolverine service E92063 entity
Predicate usesLine P1293 FINISHED
Object 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.
E401128 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: Norfolk Southern trackage in Indiana and Illinois | Statement: [Amtrak Wolverine service, usesLine, Norfolk Southern trackage in Indiana and Illinois]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Norfolk Southern trackage in Indiana and Illinois
Context triple: [Amtrak Wolverine service, usesLine, Norfolk Southern trackage in Indiana and Illinois]
  • A. Norfolk Southern Southern Tier Line
    The Norfolk Southern Southern Tier Line is a freight rail corridor in New York State that also hosts Metro-North’s Port Jervis Line commuter service.
  • B. Chicago, Indianapolis and Louisville Railway
    The Chicago, Indianapolis and Louisville Railway, commonly known as the Monon Railroad, was a regional railroad that connected key Midwestern cities and played a significant role in the transportation network of Indiana and surrounding states in the late 19th and early 20th centuries.
  • C. Illinois Central Railroad
    The Illinois Central Railroad was a major American rail carrier that played a pivotal role in connecting the Midwest to the Gulf of Mexico and fostering economic development along its north–south route.
  • D. Louisville and Nashville Railroad
    The Louisville and Nashville Railroad was a major U.S. railroad company that operated across the southeastern United States from the 19th century into the late 20th century, playing a key role in regional freight and passenger transportation.
  • E. Rock Island District main line
    The Rock Island District main line is a primary Metra commuter rail route in the Chicago area, running between downtown Chicago and its southwestern suburbs.
  • 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: Norfolk Southern trackage in Indiana and Illinois
Triple: [Amtrak Wolverine service, usesLine, Norfolk Southern trackage in Indiana and Illinois]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Norfolk Southern trackage in Indiana and Illinois
Target entity description: 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.
  • A. Norfolk Southern Southern Tier Line
    The Norfolk Southern Southern Tier Line is a freight rail corridor in New York State that also hosts Metro-North’s Port Jervis Line commuter service.
  • B. Chicago, Indianapolis and Louisville Railway
    The Chicago, Indianapolis and Louisville Railway, commonly known as the Monon Railroad, was a regional railroad that connected key Midwestern cities and played a significant role in the transportation network of Indiana and surrounding states in the late 19th and early 20th centuries.
  • C. Illinois Central Railroad
    The Illinois Central Railroad was a major American rail carrier that played a pivotal role in connecting the Midwest to the Gulf of Mexico and fostering economic development along its north–south route.
  • D. Louisville and Nashville Railroad
    The Louisville and Nashville Railroad was a major U.S. railroad company that operated across the southeastern United States from the 19th century into the late 20th century, playing a key role in regional freight and passenger transportation.
  • E. Rock Island District main line
    The Rock Island District main line is a primary Metra commuter rail route in the Chicago area, running between downtown Chicago and its southwestern suburbs.
  • 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_69aed965502c8190904ebad1203a4ae8 completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69aeedff736c8190b22e03d94c40f61a completed March 9, 2026, 3:57 p.m.
NED1 Entity disambiguation (via context triple) batch_69b533912bf881909e5e5e9e4245edbf completed March 14, 2026, 10:08 a.m.
NEDg Description generation batch_69b534343a4081909495add7f524cbd2 completed March 14, 2026, 10:11 a.m.
NED2 Entity disambiguation (via description) batch_69b534931f188190a9428f1b81e524a4 completed March 14, 2026, 10:12 a.m.
Created at: March 9, 2026, 3:24 p.m.