Triple

T12059974
Position Surface form Disambiguated ID Type / Status
Subject Baltimore rail network E287140 entity
Predicate includesLine P2124 FINISHED
Object CSX Baltimore Terminal Subdivision
The CSX Baltimore Terminal Subdivision is a key freight rail line in Baltimore, Maryland, serving as a major CSX Transportation corridor for moving goods through the city’s rail network.
 E969326 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: CSX Baltimore Terminal Subdivision | Statement: [Baltimore rail network, includesLine, CSX Baltimore Terminal Subdivision]

Disambiguation candidates (2 decisions)

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: CSX Baltimore Terminal Subdivision
Context triple: [Baltimore rail network, includesLine, CSX Baltimore Terminal Subdivision]
  • A. CSX Bellwood Subdivision
    The CSX Bellwood Subdivision is a freight rail line in Virginia operated by CSX Transportation, forming part of the company’s network around the Richmond area.
  • B. CSX Capital Subdivision
    CSX Capital Subdivision is a CSX Transportation rail line in Maryland that serves as a key freight and commuter corridor between Washington, D.C., and Baltimore.
  • C. CSX Old Main Line Subdivision
    The CSX Old Main Line Subdivision is a historic freight rail line in Maryland that traces much of the original route of the Baltimore and Ohio Railroad, one of the oldest railroads in the United States.
  • D. CSX Transportation Cumberland Subdivision
    CSX Transportation's Cumberland Subdivision is a major freight rail line running through Maryland and West Virginia that also hosts MARC commuter rail service on the Brunswick Line.
  • E. CSX RF&P Subdivision
    The CSX RF&P Subdivision is a major CSX Transportation rail line in Virginia that forms part of the busy freight and passenger corridor linking Washington, D.C. with Richmond and points south.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: CSX Baltimore Terminal Subdivision
Target entity description: The CSX Baltimore Terminal Subdivision is a key freight rail line in Baltimore, Maryland, serving as a major CSX Transportation corridor for moving goods through the city’s rail network.
  • A. CSX Bellwood Subdivision
    The CSX Bellwood Subdivision is a freight rail line in Virginia operated by CSX Transportation, forming part of the company’s network around the Richmond area.
  • B. CSX Capital Subdivision
    CSX Capital Subdivision is a CSX Transportation rail line in Maryland that serves as a key freight and commuter corridor between Washington, D.C., and Baltimore.
  • C. CSX Old Main Line Subdivision
    The CSX Old Main Line Subdivision is a historic freight rail line in Maryland that traces much of the original route of the Baltimore and Ohio Railroad, one of the oldest railroads in the United States.
  • D. CSX Transportation Cumberland Subdivision
    CSX Transportation's Cumberland Subdivision is a major freight rail line running through Maryland and West Virginia that also hosts MARC commuter rail service on the Brunswick Line.
  • E. CSX RF&P Subdivision
    The CSX RF&P Subdivision is a major CSX Transportation rail line in Virginia that forms part of the busy freight and passenger corridor linking Washington, D.C. with Richmond and points south.
  • F. None of above. chosen

How the object was described

The object's one-sentence description was generated by prompting gpt-5.1 with the object name and this triple as context.

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: CSX Baltimore Terminal Subdivision
Triple: [Baltimore rail network, includesLine, CSX Baltimore Terminal Subdivision]
Generated description
The CSX Baltimore Terminal Subdivision is a key freight rail line in Baltimore, Maryland, serving as a major CSX Transportation corridor for moving goods through the city’s rail network.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d6ab4780948190bdb9f7620c2ac27e elicitation completed
NER batch_69d9043dbccc8190bf9da181f826f0d8 ner completed
NED1 batch_69f60a64c8bc8190920c1ed858ea4794 ned_source_triple completed
NED2 batch_69f60cd51d34819099927fee476958ea ned_description completed
NEDg batch_69f60bda16e48190af8abc0aa8ef41f0 nedg completed
Created at: April 8, 2026, 9:47 p.m.