Triple

T19439935
Position Surface form Disambiguated ID Type / Status
Subject Green Line West Branch E486321 entity
Predicate connectsWith P37 FINISHED
Object Green Line Lake Street branch
The Green Line Lake Street branch is a segment of Boston’s MBTA Green Line light rail system that runs primarily along Beacon Street and serves neighborhoods in Brookline and Boston.
E1375059 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: Green Line Lake Street branch | Statement: [Green Line West Branch, connectsWith, Green Line Lake Street branch]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Green Line Lake Street branch
Context triple: [Green Line West Branch, connectsWith, Green Line Lake Street branch]
  • A. Red Line northwest branch
    The Red Line northwest branch is a planned rapid transit extension serving the northwestern suburbs as part of the Red Line’s expanded corridor.
  • B. LaSalle (Blue Line)
    LaSalle is a Chicago 'L' Blue Line subway station located in the Loop, serving downtown commuters and connecting to nearby Metra and other transit services.
  • C. Lake (Red Line)
    Lake (Red Line) is a Chicago 'L' rapid transit station in the Loop that serves the Red Line beneath State Street.
  • D. Fourth Avenue Line
    The Fourth Avenue Line is a major New York City Subway trunk line in Brooklyn that carries several services, including the N train, along a north–south corridor.
  • E. Green Line Union Square branch
    The Green Line Union Square branch is a light rail extension of Boston’s MBTA Green Line that serves the Union Square area of Somerville, Massachusetts.
  • 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: Green Line Lake Street branch
Triple: [Green Line West Branch, connectsWith, Green Line Lake Street branch]
Generated description
The Green Line Lake Street branch is a segment of Boston’s MBTA Green Line light rail system that runs primarily along Beacon Street and serves neighborhoods in Brookline and Boston.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Green Line Lake Street branch
Target entity description: The Green Line Lake Street branch is a segment of Boston’s MBTA Green Line light rail system that runs primarily along Beacon Street and serves neighborhoods in Brookline and Boston.
  • A. Red Line northwest branch
    The Red Line northwest branch is a planned rapid transit extension serving the northwestern suburbs as part of the Red Line’s expanded corridor.
  • B. LaSalle (Blue Line)
    LaSalle is a Chicago 'L' Blue Line subway station located in the Loop, serving downtown commuters and connecting to nearby Metra and other transit services.
  • C. Lake (Red Line)
    Lake (Red Line) is a Chicago 'L' rapid transit station in the Loop that serves the Red Line beneath State Street.
  • D. Fourth Avenue Line
    The Fourth Avenue Line is a major New York City Subway trunk line in Brooklyn that carries several services, including the N train, along a north–south corridor.
  • E. Green Line Union Square branch
    The Green Line Union Square branch is a light rail extension of Boston’s MBTA Green Line that serves the Union Square area of Somerville, Massachusetts.
  • 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_69d8e8d7ad488190a3373045029b0f3b completed April 10, 2026, 12:11 p.m.
NER Named-entity recognition batch_69e63364371081908e899c2a47af4e5d completed April 20, 2026, 2:08 p.m.
NED1 Entity disambiguation (via context triple) batch_6a0733e22b4c8190b992da00618be661 completed May 15, 2026, 2:55 p.m.
NEDg Description generation batch_6a07353f35588190b7d6c1f2a34cce3c completed May 15, 2026, 3:01 p.m.
NED2 Entity disambiguation (via description) batch_6a0735c38b7881908489916ff2f2883e completed May 15, 2026, 3:03 p.m.
Created at: April 10, 2026, 1:38 p.m.