Triple

T7048572
Position Surface form Disambiguated ID Type / Status
Subject Chicago (via Lake Shore Limited) E163705 entity
Predicate linkedByServiceTo P74738 FINISHED
Object Boston (via Lake Shore Limited)
Boston (via Lake Shore Limited) is the eastern terminus city served by Amtrak’s Lake Shore Limited route that runs between Chicago and Boston.
E639527 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: Boston (via Lake Shore Limited) | Statement: [Chicago (via Lake Shore Limited), linkedByServiceTo, Boston (via Lake Shore Limited)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Boston (via Lake Shore Limited)
Context triple: [Chicago (via Lake Shore Limited), linkedByServiceTo, Boston (via Lake Shore Limited)]
  • A. Chicago (via Lake Shore Limited)
    Chicago (via Lake Shore Limited) is the western terminus city of Amtrak’s Lake Shore Limited route, a major intercity passenger rail service linking the Midwest and the Northeast.
  • B. 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.
  • C. Northstar commuter rail
    Northstar commuter rail is a commuter train service in the Minneapolis–Saint Paul metropolitan area that connects downtown Minneapolis with northern suburbs and exurban communities.
  • 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. Boston’s North Station (via Fitchburg Line)
    Boston’s North Station (via Fitchburg Line) is a major MBTA commuter rail terminal in Boston that serves as the downtown endpoint for the Fitchburg Line and several other northside rail routes.
  • 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: Boston (via Lake Shore Limited)
Triple: [Chicago (via Lake Shore Limited), linkedByServiceTo, Boston (via Lake Shore Limited)]
Generated description
Boston (via Lake Shore Limited) is the eastern terminus city served by Amtrak’s Lake Shore Limited route that runs between Chicago and Boston.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Boston (via Lake Shore Limited)
Target entity description: Boston (via Lake Shore Limited) is the eastern terminus city served by Amtrak’s Lake Shore Limited route that runs between Chicago and Boston.
  • A. Chicago (via Lake Shore Limited)
    Chicago (via Lake Shore Limited) is the western terminus city of Amtrak’s Lake Shore Limited route, a major intercity passenger rail service linking the Midwest and the Northeast.
  • B. 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.
  • C. Northstar commuter rail
    Northstar commuter rail is a commuter train service in the Minneapolis–Saint Paul metropolitan area that connects downtown Minneapolis with northern suburbs and exurban communities.
  • 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. Boston’s North Station (via Fitchburg Line)
    Boston’s North Station (via Fitchburg Line) is a major MBTA commuter rail terminal in Boston that serves as the downtown endpoint for the Fitchburg Line and several other northside rail routes.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: linkedByServiceTo
Context triple: [Chicago (via Lake Shore Limited), linkedByServiceTo, Boston (via Lake Shore Limited)]
  • A. relatedService
    Indicates that one service is connected or associated with another service in a relevant or dependent way.
  • B. linkedByStructure
    Indicates that two entities are connected or associated through a shared structural element, configuration, or framework.
  • C. servedByService
    Indicates that something is provided, handled, or fulfilled by a particular service.
  • D. leaderAssociatedWith
    Indicates a relationship where a leader is connected or affiliated with a particular entity, such as an organization, group, or cause.
  • E. linkedToPolicy
    Indicates that an entity is associated or connected to a specific policy, such that the policy governs, influences, or is relevant to that entity.
  • F. None of above. chosen

Provenance (7 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_69c6885f598c8190b6b6495c59d8d962 completed March 27, 2026, 1:38 p.m.
NER Named-entity recognition batch_69c6e4a3c36c819080942c59f1830ae8 completed March 27, 2026, 8:12 p.m.
NED1 Entity disambiguation (via context triple) batch_69c7888497b08190b1f2aa686e8e30c1 completed March 28, 2026, 7:51 a.m.
NEDg Description generation batch_69c78c31d57c8190a45d25ac77ff6280 completed March 28, 2026, 8:07 a.m.
NED2 Entity disambiguation (via description) batch_69c78d635c94819083463128483a60f6 completed March 28, 2026, 8:12 a.m.
PD Predicate disambiguation batch_69c6e1bb602081908bfa6186a1f5a4b4 completed March 27, 2026, 7:59 p.m.
PDg Predicate description generation batch_69c6e4a15b088190bee9a23e94aaac53 completed March 27, 2026, 8:12 p.m.
Created at: March 27, 2026, 2:37 p.m.