Triple

T6191825
Position Surface form Disambiguated ID Type / Status
Subject SL2 E138406 entity
Predicate hasRouteFamily P21451 FINISHED
Object Silver Line Waterfront branches
Silver Line Waterfront branches are a group of MBTA Silver Line bus rapid transit routes in Boston that serve the South Boston Waterfront and Seaport District.
E575193 NE FINISHED

How this triple was built (5 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: Silver Line Waterfront branches | Statement: [SL2, hasRouteFamily, Silver Line Waterfront branches]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Silver Line Waterfront branches
Context triple: [SL2, hasRouteFamily, Silver Line Waterfront branches]
  • A. Red Line Braintree Branch
    The Red Line Braintree Branch is a southern extension of Boston's MBTA Red Line rapid transit system that serves communities between Quincy and Braintree.
  • B. Braintree Branch of the Red Line
    The Braintree Branch of the Red Line is a southern extension of Boston’s MBTA rapid transit system that runs from JFK/UMass through Quincy to Braintree, serving several South Shore communities.
  • C. 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.
  • D. Red Line Alewife branch
    The Red Line Alewife branch is a segment of Boston's MBTA Red Line rapid transit system that runs through Cambridge and surrounding areas, terminating at Alewife station.
  • E. Ashmont branch
    The Ashmont branch is a southern segment of Boston's MBTA Red Line rapid transit system that serves neighborhoods including Dorchester and terminates at Ashmont station.
  • 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: Silver Line Waterfront branches
Triple: [SL2, hasRouteFamily, Silver Line Waterfront branches]
Generated description
Silver Line Waterfront branches are a group of MBTA Silver Line bus rapid transit routes in Boston that serve the South Boston Waterfront and Seaport District.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Silver Line Waterfront branches
Target entity description: Silver Line Waterfront branches are a group of MBTA Silver Line bus rapid transit routes in Boston that serve the South Boston Waterfront and Seaport District.
  • A. Red Line Braintree Branch
    The Red Line Braintree Branch is a southern extension of Boston's MBTA Red Line rapid transit system that serves communities between Quincy and Braintree.
  • B. Braintree Branch of the Red Line
    The Braintree Branch of the Red Line is a southern extension of Boston’s MBTA rapid transit system that runs from JFK/UMass through Quincy to Braintree, serving several South Shore communities.
  • C. 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.
  • D. Red Line Alewife branch
    The Red Line Alewife branch is a segment of Boston's MBTA Red Line rapid transit system that runs through Cambridge and surrounding areas, terminating at Alewife station.
  • E. Ashmont branch
    The Ashmont branch is a southern segment of Boston's MBTA Red Line rapid transit system that serves neighborhoods including Dorchester and terminates at Ashmont station.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: hasRouteFamily
Context triple: [SL2, hasRouteFamily, Silver Line Waterfront branches]
  • A. routeFamily chosen
    Indicates a familial or hierarchical relationship between routes, such as one route being derived from, grouped with, or subordinate to another within a routing structure.
  • B. hasRouteType
    Indicates that there is a specific kind or category of route associated with an entity (e.g., road, rail, bus line).
  • C. hasRoute
    Indicates that there exists a path or connection enabling travel or communication from one entity to another.
  • D. hasRouteFeature
    Indicates that a route possesses or is associated with a specific characteristic, attribute, or feature.
  • E. hasRouteMaps
    Indicates that one entity possesses or provides route maps that describe paths, directions, or connections related to another entity.
  • F. None of above.

Provenance (6 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_69c008ab9b3081908a11b2c744838435 completed March 22, 2026, 3:20 p.m.
NER Named-entity recognition batch_69c06241977c81909ab8486f5aa30be0 completed March 22, 2026, 9:42 p.m.
NED1 Entity disambiguation (via context triple) batch_69c16f1403888190b558a43998fa5d05 completed March 23, 2026, 4:49 p.m.
NEDg Description generation batch_69c1e2a4ec088190bf7a7359a9f86645 completed March 24, 2026, 1:02 a.m.
NED2 Entity disambiguation (via description) batch_69c1e3323f788190a8cc4c870fef1d2b completed March 24, 2026, 1:04 a.m.
PD Predicate disambiguation batch_69c055fbce1081908805fd12e242ab96 completed March 22, 2026, 8:50 p.m.
Created at: March 22, 2026, 4:19 p.m.