Triple

T6149212
Position Surface form Disambiguated ID Type / Status
Subject Washington Street surface section E137154 entity
Predicate hasService P182 FINISHED
Object Silver Line SL5
Silver Line SL5 is a bus rapid transit route in Boston that operates as part of the MBTA Silver Line, connecting downtown with neighborhoods along Washington Street.
 E574024 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: Silver Line SL5 | Statement: [Washington Street surface section, hasService, Silver Line SL5]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Silver Line SL5
Context triple: [Washington Street surface section, hasService, Silver Line SL5]
  • A. Silver Line SL4
    Silver Line SL4 is a bus rapid transit route in Boston that operates as part of the MBTA Silver Line, connecting downtown with neighborhoods along Washington Street.
  • B. S55 line
    The S55 line is a former regional commuter rail service that operated as part of the Zürich S-Bahn network in Switzerland.
  • C. Line 15–Silver
    Line 15–Silver is a driverless monorail line of the São Paulo Metro system serving the city’s eastern zone.
  • D. S Line
    The S Line is a modern streetcar route in the Salt Lake City area that provides local transit service and links neighborhoods to the broader TRAX light rail network.
  • E. S Line
    The S Line is a route within the Sounder commuter rail system that provides passenger rail service in the Seattle metropolitan area.
  • 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 SL5
Triple: [Washington Street surface section, hasService, Silver Line SL5]
Generated description
Silver Line SL5 is a bus rapid transit route in Boston that operates as part of the MBTA Silver Line, connecting downtown with neighborhoods along Washington Street.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Silver Line SL5
Target entity description: Silver Line SL5 is a bus rapid transit route in Boston that operates as part of the MBTA Silver Line, connecting downtown with neighborhoods along Washington Street.
  • A. Silver Line SL4
    Silver Line SL4 is a bus rapid transit route in Boston that operates as part of the MBTA Silver Line, connecting downtown with neighborhoods along Washington Street.
  • B. S55 line
    The S55 line is a former regional commuter rail service that operated as part of the Zürich S-Bahn network in Switzerland.
  • C. Line 15–Silver
    Line 15–Silver is a driverless monorail line of the São Paulo Metro system serving the city’s eastern zone.
  • D. S Line
    The S Line is a modern streetcar route in the Salt Lake City area that provides local transit service and links neighborhoods to the broader TRAX light rail network.
  • E. S Line
    The S Line is a route within the Sounder commuter rail system that provides passenger rail service in the Seattle metropolitan area.
  • 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_69c008a2c6308190a56519b22d55d083 completed March 22, 2026, 3:20 p.m.
NER Named-entity recognition batch_69c05ce21820819096be9159d6b70a5f completed March 22, 2026, 9:19 p.m.
NED1 Entity disambiguation (via context triple) batch_69c1417c33d08190bd42558cc734601f completed March 23, 2026, 1:34 p.m.
NEDg Description generation batch_69c146d3fa348190973f78a581e98632 completed March 23, 2026, 1:57 p.m.
NED2 Entity disambiguation (via description) batch_69c14766c4d48190afe011afb45543dc completed March 23, 2026, 2 p.m.
Created at: March 22, 2026, 4:16 p.m.