Triple

T14077585
Position Surface form Disambiguated ID Type / Status
Subject Washington Street Elevated E338777 entity
Predicate connectedTo P37 FINISHED
Object Charlestown Elevated via Main Line Elevated
Charlestown Elevated via Main Line Elevated was a former elevated rapid transit line in Boston that carried Main Line (later Orange Line) trains through the Charlestown area before its eventual demolition and replacement by modern subway infrastructure.
E1077170 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: Charlestown Elevated via Main Line Elevated | Statement: [Washington Street Elevated, connectedTo, Charlestown Elevated via Main Line Elevated]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Charlestown Elevated via Main Line Elevated
Context triple: [Washington Street Elevated, connectedTo, Charlestown Elevated via Main Line Elevated]
  • A. Fulton Street Line
    The Fulton Street Line is a major New York City Subway corridor in Brooklyn and Manhattan that carries IND services such as the A and C trains along Fulton Street.
  • B. Metropolitan West Side Elevated Railroad
    The Metropolitan West Side Elevated Railroad was an early elevated transit line in Chicago that formed part of the city’s first rapid transit system on the West Side.
  • C. Lenox Avenue Line
    The Lenox Avenue Line is a major New York City Subway route in Harlem, Manhattan, primarily served by IRT trains running beneath Lenox Avenue.
  • D. Third Avenue Line
    The Third Avenue Line was a major elevated railway in Manhattan that once formed a key part of New York City's early rapid transit system.
  • E. Bronx elevated lines
    The Bronx elevated lines were early New York City rapid transit routes consisting of elevated railway tracks extending service from Manhattan into the Bronx.
  • 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: Charlestown Elevated via Main Line Elevated
Triple: [Washington Street Elevated, connectedTo, Charlestown Elevated via Main Line Elevated]
Generated description
Charlestown Elevated via Main Line Elevated was a former elevated rapid transit line in Boston that carried Main Line (later Orange Line) trains through the Charlestown area before its eventual demolition and replacement by modern subway infrastructure.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Charlestown Elevated via Main Line Elevated
Target entity description: Charlestown Elevated via Main Line Elevated was a former elevated rapid transit line in Boston that carried Main Line (later Orange Line) trains through the Charlestown area before its eventual demolition and replacement by modern subway infrastructure.
  • A. Fulton Street Line
    The Fulton Street Line is a major New York City Subway corridor in Brooklyn and Manhattan that carries IND services such as the A and C trains along Fulton Street.
  • B. Metropolitan West Side Elevated Railroad
    The Metropolitan West Side Elevated Railroad was an early elevated transit line in Chicago that formed part of the city’s first rapid transit system on the West Side.
  • C. Lenox Avenue Line
    The Lenox Avenue Line is a major New York City Subway route in Harlem, Manhattan, primarily served by IRT trains running beneath Lenox Avenue.
  • D. Third Avenue Line
    The Third Avenue Line was a major elevated railway in Manhattan that once formed a key part of New York City's early rapid transit system.
  • E. Bronx elevated lines
    The Bronx elevated lines were early New York City rapid transit routes consisting of elevated railway tracks extending service from Manhattan into the Bronx.
  • 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_69d81c687b0c819087fd9ed4198403f8 completed April 9, 2026, 9:38 p.m.
NER Named-entity recognition batch_69de5c5cdd288190914e1d57321b3554 completed April 14, 2026, 3:25 p.m.
NED1 Entity disambiguation (via context triple) batch_69fcb670f51c819088e8d0137f8d3bb1 completed May 7, 2026, 3:57 p.m.
NEDg Description generation batch_69fcbef464248190881012d92777557c completed May 7, 2026, 4:33 p.m.
NED2 Entity disambiguation (via description) batch_69fcbfbae7608190a8d8cf0fa270df9d completed May 7, 2026, 4:37 p.m.
Created at: April 9, 2026, 10:21 p.m.