Triple

T7929283
Position Surface form Disambiguated ID Type / Status
Subject Flagler System of railroads and hotels E184145 entity
Predicate hasPart P35 FINISHED
Object Key West Extension of the Florida East Coast Railway E317567 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Key West Extension of the Florida East Coast Railway | Statement: [Flagler System of railroads and hotels, hasPart, Key West Extension of the Florida East Coast Railway]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Key West Extension of the Florida East Coast Railway
Context triple: [Flagler System of railroads and hotels, hasPart, Key West Extension of the Florida East Coast Railway]
  • A. Key West Extension chosen
    Key West Extension is the historic segment of the Florida East Coast Railway that extended the line over a series of bridges and viaducts from mainland Florida to Key West.
  • B. Florida East Coast Railway (historical)
    The Florida East Coast Railway (historical) was a major rail line developed by Henry Flagler that opened up Florida’s Atlantic coast to tourism, commerce, and urban growth in the late 19th and early 20th centuries.
  • C. Floridian (train)
    The Floridian was a long-distance passenger train that ran between Chicago and Florida, offering intercity rail service through the American Midwest and Southeast in the mid-20th century.
  • D. Pensacola and Atlantic Railroad
    The Pensacola and Atlantic Railroad was a 19th-century rail line in Florida that played a key role in opening and developing the Florida Panhandle by connecting it to major transportation networks.
  • E. All Aboard Florida project
    The All Aboard Florida project is a privately developed intercity passenger rail initiative—now operating as Brightline—linking major cities in Florida with new stations and transit-oriented real estate developments.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69ca828fe7bc819090f52c88dcd72183 elicitation completed
NER batch_69cb3acb6cb88190b4f31b7091881241 ner completed
NED1 batch_69cb5c01602081908ea1af24785260ff ned_source_triple completed
Created at: March 30, 2026, 5:07 p.m.