Triple

T15434065
Position Surface form Disambiguated ID Type / Status
Subject Monon Railroad E369712 entity
Predicate railLine P848 FINISHED
Object 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.
E1159613 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: Indianapolis–Michigan City line | Statement: [Monon Railroad, railLine, Indianapolis–Michigan City line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Indianapolis–Michigan City line
Context triple: [Monon Railroad, railLine, Indianapolis–Michigan City line]
  • A. 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.
  • B. 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.
  • C. Chicago–Sioux City line
    The Chicago–Sioux City line is a historic Midwestern rail route that connected Chicago, Illinois, with Sioux City, Iowa, serving as a key corridor for passenger and freight traffic in the region.
  • D. 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.
  • E. Chicago–Indianapolis corridor
    The Chicago–Indianapolis corridor is a major Midwestern transportation route linking the metropolitan hubs of Chicago, Illinois and Indianapolis, Indiana by highway and rail.
  • 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: Indianapolis–Michigan City line
Triple: [Monon Railroad, railLine, Indianapolis–Michigan City line]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Indianapolis–Michigan City line
Target entity description: 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.
  • A. 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.
  • B. 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.
  • C. Chicago–Sioux City line
    The Chicago–Sioux City line is a historic Midwestern rail route that connected Chicago, Illinois, with Sioux City, Iowa, serving as a key corridor for passenger and freight traffic in the region.
  • D. 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.
  • E. Chicago–Indianapolis corridor
    The Chicago–Indianapolis corridor is a major Midwestern transportation route linking the metropolitan hubs of Chicago, Illinois and Indianapolis, Indiana by highway and rail.
  • 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_69d85a19180081909925012fbf4e62a3 completed April 10, 2026, 2:02 a.m.
NER Named-entity recognition batch_69e03eda01cc8190843e23b260b8503c completed April 16, 2026, 1:43 a.m.
NED1 Entity disambiguation (via context triple) batch_69ff2cf5d788819086a94af42c2ec21a completed May 9, 2026, 12:47 p.m.
NEDg Description generation batch_69ff2e4010dc8190b0f81d03acf8ba41 completed May 9, 2026, 12:53 p.m.
NED2 Entity disambiguation (via description) batch_69ff310c2d5c819093295c45307176ec completed May 9, 2026, 1:05 p.m.
Created at: April 10, 2026, 3:21 a.m.