Triple

T6149191
Position Surface form Disambiguated ID Type / Status
Subject SL1 E137153 entity
Predicate connectsWith P37 FINISHED
Object Amtrak at South Station
Amtrak at South Station is the intercity passenger rail service operating from Boston’s historic South Station, providing regional and long-distance train connections along the Northeast Corridor and beyond.
 E574023 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: Amtrak at South Station | Statement: [SL1, connectsWith, Amtrak at South Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Amtrak at South Station
Context triple: [SL1, connectsWith, Amtrak at South Station]
  • A. MBTA Commuter Rail at South Station
    MBTA Commuter Rail at South Station is the regional rail service hub in downtown Boston that provides commuter train connections between the city and surrounding suburbs and cities across Massachusetts and neighboring states.
  • B. MBTA Silver Line at South Station
    The MBTA Silver Line at South Station is a key Boston bus rapid transit hub providing underground and surface connections between South Station and destinations including the Seaport District and Logan Airport.
  • C. Amtrak Providence Station
    Amtrak Providence Station is a major intercity and commuter rail hub in downtown Providence, Rhode Island, serving Amtrak’s Northeast Corridor and MBTA commuter rail services.
  • D. Amtrak Downeaster (at North Station)
    The Amtrak Downeaster (at North Station) is an intercity passenger rail service that operates between Boston’s North Station and Brunswick, Maine, providing regional connections through New Hampshire and coastal Maine.
  • E. Airport South Station
    Airport South Station is a Guangzhou Metro station serving Guangzhou Baiyun International Airport’s southern terminal 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: Amtrak at South Station
Triple: [SL1, connectsWith, Amtrak at South Station]
Generated description
Amtrak at South Station is the intercity passenger rail service operating from Boston’s historic South Station, providing regional and long-distance train connections along the Northeast Corridor and beyond.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Amtrak at South Station
Target entity description: Amtrak at South Station is the intercity passenger rail service operating from Boston’s historic South Station, providing regional and long-distance train connections along the Northeast Corridor and beyond.
  • A. MBTA Commuter Rail at South Station
    MBTA Commuter Rail at South Station is the regional rail service hub in downtown Boston that provides commuter train connections between the city and surrounding suburbs and cities across Massachusetts and neighboring states.
  • B. MBTA Silver Line at South Station
    The MBTA Silver Line at South Station is a key Boston bus rapid transit hub providing underground and surface connections between South Station and destinations including the Seaport District and Logan Airport.
  • C. Amtrak Providence Station
    Amtrak Providence Station is a major intercity and commuter rail hub in downtown Providence, Rhode Island, serving Amtrak’s Northeast Corridor and MBTA commuter rail services.
  • D. Amtrak Downeaster (at North Station)
    The Amtrak Downeaster (at North Station) is an intercity passenger rail service that operates between Boston’s North Station and Brunswick, Maine, providing regional connections through New Hampshire and coastal Maine.
  • E. Airport South Station
    Airport South Station is a Guangzhou Metro station serving Guangzhou Baiyun International Airport’s southern terminal 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.