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.