Triple

T1178212
Position Surface form Disambiguated ID Type / Status
Subject MBTA Green Line E25076 entity
Predicate hasBranch P35 FINISHED
Object B Branch
The B Branch is a light rail service of Boston’s MBTA Green Line that runs along Commonwealth Avenue, primarily serving Boston University and the Allston–Brighton neighborhoods.
 E134781 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: B Branch | Statement: [MBTA Green Line, hasBranch, B Branch]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: B Branch
Context triple: [MBTA Green Line, hasBranch, B Branch]
  • A. Aurora Branch
    Aurora Branch is a segment of the Illinois Prairie Path, a multi-use recreational trail in northeastern Illinois that extends toward the city of Aurora.
  • B. Line B
    Line B is a major Mexico City Metro route that runs diagonally across the city, connecting central areas with northeastern suburbs and serving as an important commuter corridor.
  • C. Babylon Branch
    The Babylon Branch is a major commuter rail line of the Long Island Rail Road serving communities along Long Island’s South Shore.
  • D. Middle Branch
    Middle Branch is a tidal estuary and waterfront area in Baltimore, Maryland, known for its recreational shoreline, parks, and role in the city's harbor ecosystem.
  • E. B Division
    B Division is the New York City Subway division that operates the system’s lettered routes, including services like the R train.
  • 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: B Branch
Triple: [MBTA Green Line, hasBranch, B Branch]
Generated description
The B Branch is a light rail service of Boston’s MBTA Green Line that runs along Commonwealth Avenue, primarily serving Boston University and the Allston–Brighton neighborhoods.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: B Branch
Target entity description: The B Branch is a light rail service of Boston’s MBTA Green Line that runs along Commonwealth Avenue, primarily serving Boston University and the Allston–Brighton neighborhoods.
  • A. Aurora Branch
    Aurora Branch is a segment of the Illinois Prairie Path, a multi-use recreational trail in northeastern Illinois that extends toward the city of Aurora.
  • B. Line B
    Line B is a major Mexico City Metro route that runs diagonally across the city, connecting central areas with northeastern suburbs and serving as an important commuter corridor.
  • C. Babylon Branch
    The Babylon Branch is a major commuter rail line of the Long Island Rail Road serving communities along Long Island’s South Shore.
  • D. Middle Branch
    Middle Branch is a tidal estuary and waterfront area in Baltimore, Maryland, known for its recreational shoreline, parks, and role in the city's harbor ecosystem.
  • E. B Division
    B Division is the New York City Subway division that operates the system’s lettered routes, including services like the R train.
  • 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_69a494267b4c819088c97a59182bf56a completed March 1, 2026, 7:31 p.m.
NER Named-entity recognition batch_69a4bd10ccc481908d5bcef648aab3c1 completed March 1, 2026, 10:26 p.m.
NED1 Entity disambiguation (via context triple) batch_69ac6f1cab308190bdb5ae1e01d83b61 completed March 7, 2026, 6:31 p.m.
NEDg Description generation batch_69ac6ff4c62881908cf88169e99d2983 completed March 7, 2026, 6:35 p.m.
NED2 Entity disambiguation (via description) batch_69ac704cdaf08190b77b0b9345537d84 completed March 7, 2026, 6:37 p.m.
Created at: March 1, 2026, 7:45 p.m.