Triple

T21213729
Position Surface form Disambiguated ID Type / Status
Subject Lake Shore and Michigan Southern Railway E522783 entity
Predicate formedByMergerOf P77 FINISHED
Object Michigan Southern and Northern Indiana Railroad
The Michigan Southern and Northern Indiana Railroad was a 19th-century American railway company that operated lines in Michigan and northern Indiana before becoming part of the larger Lake Shore and Michigan Southern Railway system.
E123608 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: Michigan Southern and Northern Indiana Railroad | Statement: [Lake Shore and Michigan Southern Railway, formedByMergerOf, Michigan Southern and Northern Indiana Railroad]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Michigan Southern and Northern Indiana Railroad
Context triple: [Lake Shore and Michigan Southern Railway, formedByMergerOf, Michigan Southern and Northern Indiana Railroad]
  • A. Chicago and Western Indiana Railroad
    The Chicago and Western Indiana Railroad was a terminal railroad company in Chicago that provided joint access and terminal facilities, including Dearborn Station, to several major railroads entering the city.
  • B. Grand Rapids and Indiana Railroad
    The Grand Rapids and Indiana Railroad was a historic rail line in the Midwestern United States that connected southern Michigan and northern Indiana to resort and timber regions along Lake Michigan and into northern Michigan.
  • C. Chicago South Shore and South Bend Railroad
    The Chicago South Shore and South Bend Railroad is an interurban electric railroad in the Midwest that historically operated passenger and freight service between Chicago, Illinois, and South Bend, Indiana.
  • D. Lake Shore and Michigan Southern Railway
    The Lake Shore and Michigan Southern Railway was a major 19th-century American railroad that formed a key part of the New York Central system, linking the Great Lakes region with the Eastern United States.
  • E. 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.
  • 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: Michigan Southern and Northern Indiana Railroad
Triple: [Lake Shore and Michigan Southern Railway, formedByMergerOf, Michigan Southern and Northern Indiana Railroad]
Generated description
The Michigan Southern and Northern Indiana Railroad was a 19th-century American railway company that operated lines in Michigan and northern Indiana before becoming part of the larger Lake Shore and Michigan Southern Railway system.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Michigan Southern and Northern Indiana Railroad
Target entity description: The Michigan Southern and Northern Indiana Railroad was a 19th-century American railway company that operated lines in Michigan and northern Indiana before becoming part of the larger Lake Shore and Michigan Southern Railway system.
  • A. Chicago and Western Indiana Railroad
    The Chicago and Western Indiana Railroad was a terminal railroad company in Chicago that provided joint access and terminal facilities, including Dearborn Station, to several major railroads entering the city.
  • B. Grand Rapids and Indiana Railroad
    The Grand Rapids and Indiana Railroad was a historic rail line in the Midwestern United States that connected southern Michigan and northern Indiana to resort and timber regions along Lake Michigan and into northern Michigan.
  • C. Chicago South Shore and South Bend Railroad
    The Chicago South Shore and South Bend Railroad is an interurban electric railroad in the Midwest that historically operated passenger and freight service between Chicago, Illinois, and South Bend, Indiana.
  • D. Lake Shore and Michigan Southern Railway chosen
    The Lake Shore and Michigan Southern Railway was a major 19th-century American railroad that formed a key part of the New York Central system, linking the Great Lakes region with the Eastern United States.
  • E. 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.
  • F. None of above.

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_69e0b511ed84819099b449b4a111085c completed April 16, 2026, 10:08 a.m.
NER Named-entity recognition batch_69e7347088488190aa764b3f4bbac44d completed April 21, 2026, 8:25 a.m.
NED1 Entity disambiguation (via context triple) batch_6a097ed6e6288190a6c0a10338458117 completed May 17, 2026, 8:39 a.m.
NEDg Description generation batch_6a097ff28ed0819081cea66e9ea5eaa2 completed May 17, 2026, 8:44 a.m.
NED2 Entity disambiguation (via description) batch_6a0981477234819093bc90f3578ddccf completed May 17, 2026, 8:50 a.m.
Created at: April 16, 2026, 3:39 p.m.