Triple

T14077592
Position Surface form Disambiguated ID Type / Status
Subject Washington Street Elevated E338777 entity
Predicate servedStation P726 FINISHED
Object Dudley (later Nubian) Square station
Dudley (later Nubian) Square station is a major transit hub in Boston’s Roxbury neighborhood that historically served as a key stop on the MBTA’s former Washington Street Elevated rapid transit line.
 E1077171 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: Dudley (later Nubian) Square station | Statement: [Washington Street Elevated, servedStation, Dudley (later Nubian) Square station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Dudley (later Nubian) Square station
Context triple: [Washington Street Elevated, servedStation, Dudley (later Nubian) Square station]
  • A. Hamilton Square railway station
    Hamilton Square railway station is an underground Merseyrail station in Birkenhead, England, serving as a key stop on the Wirral Line.
  • B. Goodge Street station
    Goodge Street station is a London Underground station on the Northern line located in the Fitzrovia area of central London.
  • C. Wellesley Square station
    Wellesley Square station is a commuter rail stop on the MBTA Framingham/Worcester Line serving the downtown area of Wellesley, Massachusetts.
  • D. Cleveland Street station
    Cleveland Street station is a local New York City Subway stop on the BMT Jamaica Line in Brooklyn, serving the Cypress Hills neighborhood.
  • E. Euston Square Underground station
    Euston Square Underground station is a London Underground station in central London served by the Circle, Hammersmith & City, and Metropolitan lines.
  • 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: Dudley (later Nubian) Square station
Triple: [Washington Street Elevated, servedStation, Dudley (later Nubian) Square station]
Generated description
Dudley (later Nubian) Square station is a major transit hub in Boston’s Roxbury neighborhood that historically served as a key stop on the MBTA’s former Washington Street Elevated rapid transit line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Dudley (later Nubian) Square station
Target entity description: Dudley (later Nubian) Square station is a major transit hub in Boston’s Roxbury neighborhood that historically served as a key stop on the MBTA’s former Washington Street Elevated rapid transit line.
  • A. Hamilton Square railway station
    Hamilton Square railway station is an underground Merseyrail station in Birkenhead, England, serving as a key stop on the Wirral Line.
  • B. Goodge Street station
    Goodge Street station is a London Underground station on the Northern line located in the Fitzrovia area of central London.
  • C. Wellesley Square station
    Wellesley Square station is a commuter rail stop on the MBTA Framingham/Worcester Line serving the downtown area of Wellesley, Massachusetts.
  • D. Cleveland Street station
    Cleveland Street station is a local New York City Subway stop on the BMT Jamaica Line in Brooklyn, serving the Cypress Hills neighborhood.
  • E. Euston Square Underground station
    Euston Square Underground station is a London Underground station in central London served by the Circle, Hammersmith & City, and Metropolitan lines.
  • 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.