Triple

T19650372
Position Surface form Disambiguated ID Type / Status
Subject Frederick Stark Pearson E471797 entity
Predicate employer P7 FINISHED
Object West End Street Railway Company
The West End Street Railway Company was a major late-19th-century streetcar operator that consolidated and ran much of the public transit system in Boston, Massachusetts.
E1388734 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: West End Street Railway Company | Statement: [Frederick Stark Pearson, employer, West End Street Railway Company]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: West End Street Railway Company
Context triple: [Frederick Stark Pearson, employer, West End Street Railway Company]
  • A. Union Stock Yard and Transit Company
    Union Stock Yard and Transit Company was the corporation that operated Chicago’s vast Union Stock Yards, once the central hub of the American meatpacking industry.
  • B. Chicago City Railway Company
    The Chicago City Railway Company was a major streetcar operator in Chicago that played a key role in developing the city’s public transit system in the late 19th and early 20th centuries.
  • C. Philadelphia Rapid Transit Company
    The Philadelphia Rapid Transit Company was a major early 20th-century public transit operator in Philadelphia that managed the city’s streetcar and rapid transit systems before being succeeded by later agencies.
  • D. Southern Street Railway Company
    The Southern Street Railway Company was a transit operator that managed portions of Chicago’s streetcar network as part of the Chicago Surface Lines system.
  • E. Manhattan Railway Company
    The Manhattan Railway Company was a major transit operator in New York City that ran the elevated train lines in Manhattan before the development of the city’s subway 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: West End Street Railway Company
Triple: [Frederick Stark Pearson, employer, West End Street Railway Company]
Generated description
The West End Street Railway Company was a major late-19th-century streetcar operator that consolidated and ran much of the public transit system in Boston, Massachusetts.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: West End Street Railway Company
Target entity description: The West End Street Railway Company was a major late-19th-century streetcar operator that consolidated and ran much of the public transit system in Boston, Massachusetts.
  • A. Union Stock Yard and Transit Company
    Union Stock Yard and Transit Company was the corporation that operated Chicago’s vast Union Stock Yards, once the central hub of the American meatpacking industry.
  • B. Chicago City Railway Company
    The Chicago City Railway Company was a major streetcar operator in Chicago that played a key role in developing the city’s public transit system in the late 19th and early 20th centuries.
  • C. Philadelphia Rapid Transit Company
    The Philadelphia Rapid Transit Company was a major early 20th-century public transit operator in Philadelphia that managed the city’s streetcar and rapid transit systems before being succeeded by later agencies.
  • D. Southern Street Railway Company
    The Southern Street Railway Company was a transit operator that managed portions of Chicago’s streetcar network as part of the Chicago Surface Lines system.
  • E. Manhattan Railway Company
    The Manhattan Railway Company was a major transit operator in New York City that ran the elevated train lines in Manhattan before the development of the city’s subway system.
  • F. None of above. chosen

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_69d8e51395348190ac1416d46dfc6db0 completed April 10, 2026, 11:54 a.m.
NER Named-entity recognition batch_69e641286bbc8190886f309de13063bf completed April 20, 2026, 3:07 p.m.
NED1 Entity disambiguation (via context triple) batch_6a077eef87108190a3858836dce29341 completed May 15, 2026, 8:15 p.m.
NEDg Description generation batch_6a077fb5d7288190a691e312ec22789b completed May 15, 2026, 8:19 p.m.
NED2 Entity disambiguation (via description) batch_6a07810b1de88190a2516712767fde52 completed May 15, 2026, 8:24 p.m.
Created at: April 10, 2026, 1:44 p.m.