Triple

T508755
Position Surface form Disambiguated ID Type / Status
Subject Philadelphia, Wilmington and Baltimore Railroad E10558 entity
Predicate formedFromMergerOf P6637 FINISHED
Object Wilmington and Susquehanna Railroad
The Wilmington and Susquehanna Railroad was an early 19th-century rail line that helped establish one of the first major rail connections between Philadelphia and the Mid-Atlantic region.
E10558 NE FINISHED

How this triple was built (5 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: Wilmington and Susquehanna Railroad | Statement: [Philadelphia, Wilmington and Baltimore Railroad, formedFromMergerOf, Wilmington and Susquehanna Railroad]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Wilmington and Susquehanna Railroad
Context triple: [Philadelphia, Wilmington and Baltimore Railroad, formedFromMergerOf, Wilmington and Susquehanna Railroad]
  • A. 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.
  • B. 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.
  • C. 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.
  • D. Sunbury and Erie Railroad
    The Sunbury and Erie Railroad was a 19th-century Pennsylvania rail line that later became part of the Northern Central Railway system.
  • E. Philadelphia, Germantown and Norristown Railroad
    The Philadelphia, Germantown and Norristown Railroad was one of the earliest railroads in the United States, serving the Philadelphia area and later becoming part of the Pennsylvania Railroad system.
  • 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: Wilmington and Susquehanna Railroad
Triple: [Philadelphia, Wilmington and Baltimore Railroad, formedFromMergerOf, Wilmington and Susquehanna Railroad]
Generated description
The Wilmington and Susquehanna Railroad was an early 19th-century rail line that helped establish one of the first major rail connections between Philadelphia and the Mid-Atlantic region.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Wilmington and Susquehanna Railroad
Target entity description: The Wilmington and Susquehanna Railroad was an early 19th-century rail line that helped establish one of the first major rail connections between Philadelphia and the Mid-Atlantic region.
  • A. 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.
  • B. 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.
  • C. 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.
  • D. Sunbury and Erie Railroad
    The Sunbury and Erie Railroad was a 19th-century Pennsylvania rail line that later became part of the Northern Central Railway system.
  • E. Philadelphia, Germantown and Norristown Railroad
    The Philadelphia, Germantown and Norristown Railroad was one of the earliest railroads in the United States, serving the Philadelphia area and later becoming part of the Pennsylvania Railroad system.
  • F. None of above.
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: formedFromMergerOf
Context triple: [Philadelphia, Wilmington and Baltimore Railroad, formedFromMergerOf, Wilmington and Susquehanna Railroad]
  • A. foundedByMergerOf chosen
    Indicates that an entity was created through the merger or combination of two or more predecessor entities.
  • B. formedBy
    Indicates that something comes into existence or is created as a result of a specific agent, process, or combination of components.
  • C. formedByUnionOf
    Indicates that something is created or defined as the union or combination of multiple other things.
  • D. mergerType
    Indicates the specific kind or category of merger relationship that exists between the involved entities.
  • E. wasUnifiedWith
    Indicates that two or more previously separate entities were brought together to form a single unified whole.
  • F. None of above.

Provenance (6 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_69a4b23bf69481908db3a0f3de8c2bf1 completed March 1, 2026, 9:40 p.m.
NEDg Description generation batch_69a4b2c975ec8190bc16f146f89c3f05 completed March 1, 2026, 9:42 p.m.
NED2 Entity disambiguation (via description) batch_69a4b343f8f88190bd011924dd485bef completed March 1, 2026, 9:44 p.m.
PD Predicate disambiguation batch_69a2edfe236481909901cc7d4281b33c completed Feb. 28, 2026, 1:30 p.m.
Created at: Feb. 28, 2026, 1:12 p.m.