Triple

T17465328
Position Surface form Disambiguated ID Type / Status
Subject Pere Marquette E425261 entity
Predicate usesRailroadLine P15040 FINISHED
Object 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.
E1271216 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 Chicago Line | Statement: [Pere Marquette, usesRailroadLine, Norfolk Southern Chicago Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Norfolk Southern Chicago Line
Context triple: [Pere Marquette, usesRailroadLine, Norfolk Southern Chicago Line]
  • A. Chicago & North Western West Line
    The Chicago & North Western West Line was a historic commuter rail route in the Chicago area that later became part of Metra’s Union Pacific West Line.
  • B. 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.
  • C. Chicago and Alton Railroad
    The Chicago and Alton Railroad was a prominent 19th- and early 20th-century Midwestern U.S. railroad that connected Chicago with central and southern Illinois and Missouri, playing a key role in regional passenger and freight transport.
  • D. Chicago–St. Louis rail corridor
    The Chicago–St. Louis rail corridor is a major Midwestern passenger and freight rail route linking Chicago, Illinois, with St. Louis, Missouri, and serving as a key component of the region’s transportation network.
  • E. 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.
  • 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 Chicago Line
Triple: [Pere Marquette, usesRailroadLine, Norfolk Southern Chicago Line]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Norfolk Southern Chicago Line
Target entity description: 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.
  • A. Chicago & North Western West Line
    The Chicago & North Western West Line was a historic commuter rail route in the Chicago area that later became part of Metra’s Union Pacific West Line.
  • B. 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.
  • C. Chicago and Alton Railroad
    The Chicago and Alton Railroad was a prominent 19th- and early 20th-century Midwestern U.S. railroad that connected Chicago with central and southern Illinois and Missouri, playing a key role in regional passenger and freight transport.
  • D. Chicago–St. Louis rail corridor
    The Chicago–St. Louis rail corridor is a major Midwestern passenger and freight rail route linking Chicago, Illinois, with St. Louis, Missouri, and serving as a key component of the region’s transportation network.
  • E. 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.
  • 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_69d889dbc2e88190b18ea6115e819258 completed April 10, 2026, 5:25 a.m.
NER Named-entity recognition batch_69e451a6c2e08190bca9de56ee2f5136 completed April 19, 2026, 3:53 a.m.
NED1 Entity disambiguation (via context triple) batch_6a01b825ed208190997ec8868c7d6f4a completed May 11, 2026, 11:06 a.m.
NEDg Description generation batch_6a01b963291481909791d9c136a9fd69 completed May 11, 2026, 11:11 a.m.
NED2 Entity disambiguation (via description) batch_6a01ba3eeb6c8190926d2cb538fcb908 completed May 11, 2026, 11:15 a.m.
Created at: April 10, 2026, 5:47 a.m.