Triple

T508757
Position Surface form Disambiguated ID Type / Status
Subject Philadelphia, Wilmington and Baltimore Railroad E10558 entity
Predicate formedFromMergerOf P6637 FINISHED
Object Baltimore and Port Deposit Railroad
The Baltimore and Port Deposit Railroad was an early 19th-century rail line in Maryland that became a key predecessor to the Philadelphia, Wilmington and Baltimore Railroad, helping establish one of the first continuous rail connections between major East Coast cities.
E10558 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: Baltimore and Port Deposit Railroad | Statement: [Philadelphia, Wilmington and Baltimore Railroad, formedFromMergerOf, Baltimore and Port Deposit Railroad]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Baltimore and Port Deposit Railroad
Context triple: [Philadelphia, Wilmington and Baltimore Railroad, formedFromMergerOf, Baltimore and Port Deposit Railroad]
  • A. Baltimore and Susquehanna Railroad
    The Baltimore and Susquehanna Railroad was an early 19th-century American railroad that helped pioneer rail transportation in Maryland and Pennsylvania, eventually becoming part of the Northern Central Railway system.
  • B. Philadelphia, Wilmington and Baltimore Railroad
    The Philadelphia, Wilmington and Baltimore Railroad was a 19th-century rail line that formed a key segment of the main corridor linking the northeastern United States, particularly connecting Philadelphia with points south.
  • C. Baltimore and Ohio Railroad
    The Baltimore and Ohio Railroad was one of the earliest and most influential American railroads, playing a key role in the development of U.S. transportation and commerce in the 19th and early 20th centuries.
  • D. Western Maryland Railway
    Western Maryland Railway was a historic regional railroad that operated primarily in Maryland, Pennsylvania, and West Virginia, known for hauling coal and freight through the Appalachian region before being absorbed into larger rail systems.
  • E. Cumberland Valley Railroad
    The Cumberland Valley Railroad was a historic American railroad that operated primarily in south-central Pennsylvania and northern Maryland, playing a key role in regional transportation during the 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: Baltimore and Port Deposit Railroad
Triple: [Philadelphia, Wilmington and Baltimore Railroad, formedFromMergerOf, Baltimore and Port Deposit Railroad]
Generated description
The Baltimore and Port Deposit Railroad was an early 19th-century rail line in Maryland that became a key predecessor to the Philadelphia, Wilmington and Baltimore Railroad, helping establish one of the first continuous rail connections between major East Coast cities.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Baltimore and Port Deposit Railroad
Target entity description: The Baltimore and Port Deposit Railroad was an early 19th-century rail line in Maryland that became a key predecessor to the Philadelphia, Wilmington and Baltimore Railroad, helping establish one of the first continuous rail connections between major East Coast cities.
  • A. Baltimore and Susquehanna Railroad
    The Baltimore and Susquehanna Railroad was an early 19th-century American railroad that helped pioneer rail transportation in Maryland and Pennsylvania, eventually becoming part of the Northern Central Railway system.
  • B. Philadelphia, Wilmington and Baltimore Railroad chosen
    The Philadelphia, Wilmington and Baltimore Railroad was a 19th-century rail line that formed a key segment of the main corridor linking the northeastern United States, particularly connecting Philadelphia with points south.
  • C. Baltimore and Ohio Railroad
    The Baltimore and Ohio Railroad was one of the earliest and most influential American railroads, playing a key role in the development of U.S. transportation and commerce in the 19th and early 20th centuries.
  • D. Western Maryland Railway
    Western Maryland Railway was a historic regional railroad that operated primarily in Maryland, Pennsylvania, and West Virginia, known for hauling coal and freight through the Appalachian region before being absorbed into larger rail systems.
  • E. Cumberland Valley Railroad
    The Cumberland Valley Railroad was a historic American railroad that operated primarily in south-central Pennsylvania and northern Maryland, playing a key role in regional transportation during the 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_69a2e848adf881908e5e04f7af030093 completed Feb. 28, 2026, 1:06 p.m.
NER Named-entity recognition batch_69a2f162f3888190b057ad04e40a30e2 completed Feb. 28, 2026, 1:45 p.m.
NED1 Entity disambiguation (via context triple) batch_69a4b8a96a188190b7a6be463de3d736 completed March 1, 2026, 10:07 p.m.
NEDg Description generation batch_69a4baa85b9881908f0a9373f06ed748 completed March 1, 2026, 10:16 p.m.
NED2 Entity disambiguation (via description) batch_69a4bb9d75288190b8c68db7bfe59c1d completed March 1, 2026, 10:20 p.m.
Created at: Feb. 28, 2026, 1:12 p.m.