Triple

T269512
Position Surface form Disambiguated ID Type / Status
Subject MBTA Green Line D branch E5598 entity
Predicate servesParkNearby P7126 FINISHED
Object Boston Common (near Park Street station)
Boston Common is a historic central public park in downtown Boston, Massachusetts, known as the oldest city park in the United States and a major recreational and gathering space.
E34909 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 Common (near Park Street station) | Statement: [MBTA Green Line D branch, servesParkNearby, Boston Common (near Park Street station)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Boston Common (near Park Street station)
Context triple: [MBTA Green Line D branch, servesParkNearby, Boston Common (near Park Street station)]
  • A. Pemberton Square, Boston
    Pemberton Square in Boston is a historic civic space in the city's downtown area that houses key government and judicial buildings, including Massachusetts’ highest court.
  • B. Copley Square, Boston
    Copley Square, Boston is a prominent public square in the Back Bay neighborhood known for its historic architecture, cultural institutions, and role as the traditional finish area of the Boston Marathon.
  • C. Cambridge Common
    Cambridge Common is a historic public park in Cambridge, Massachusetts, known for its role in the American Revolutionary War and as a central civic gathering space.
  • D. MBTA Silver Hill station
    MBTA Silver Hill station is a small commuter rail stop on the Massachusetts Bay Transportation Authority’s Fitchburg Line serving the Silver Hill neighborhood of Weston, Massachusetts.
  • E. Porter Square
    Porter Square is a bustling commercial and transit hub in northern Cambridge, Massachusetts, known for its shopping centers, restaurants, and MBTA Red Line and commuter rail 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: Boston Common (near Park Street station)
Triple: [MBTA Green Line D branch, servesParkNearby, Boston Common (near Park Street station)]
Generated description
Boston Common is a historic central public park in downtown Boston, Massachusetts, known as the oldest city park in the United States and a major recreational and gathering space.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Boston Common (near Park Street station)
Target entity description: Boston Common is a historic central public park in downtown Boston, Massachusetts, known as the oldest city park in the United States and a major recreational and gathering space.
  • A. Pemberton Square, Boston
    Pemberton Square in Boston is a historic civic space in the city's downtown area that houses key government and judicial buildings, including Massachusetts’ highest court.
  • B. Copley Square, Boston
    Copley Square, Boston is a prominent public square in the Back Bay neighborhood known for its historic architecture, cultural institutions, and role as the traditional finish area of the Boston Marathon.
  • C. Cambridge Common
    Cambridge Common is a historic public park in Cambridge, Massachusetts, known for its role in the American Revolutionary War and as a central civic gathering space.
  • D. MBTA Silver Hill station
    MBTA Silver Hill station is a small commuter rail stop on the Massachusetts Bay Transportation Authority’s Fitchburg Line serving the Silver Hill neighborhood of Weston, Massachusetts.
  • E. Porter Square
    Porter Square is a bustling commercial and transit hub in northern Cambridge, Massachusetts, known for its shopping centers, restaurants, and MBTA Red Line and commuter rail station.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: servesParkNearby
Context triple: [MBTA Green Line D branch, servesParkNearby, Boston Common (near Park Street station)]
  • A. hasAttractionNearby
    Indicates that one entity is located close to another entity that serves as an attraction or point of interest.
  • B. servesAttraction chosen
    Indicates that one entity functions as or provides a service that supports or enhances the experience of a particular attraction.
  • C. hasNearbyFacility
    Indicates that one entity is located close to or in the vicinity of a particular facility.
  • D. placesWithin
    Indicates that one place or area is located entirely inside the boundaries of another place or area.
  • E. nearbyCurrent
    Indicates that one entity is located close to another entity at the present moment or in the current context.
  • 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_69a25853594c8190b05ec3a586ec88bf completed Feb. 28, 2026, 2:52 a.m.
NER Named-entity recognition batch_69a25db00ed48190be6f598807265356 completed Feb. 28, 2026, 3:14 a.m.
NED1 Entity disambiguation (via context triple) batch_69a38b9220f08190a94ffd00bb7425fd completed March 1, 2026, 12:42 a.m.
NEDg Description generation batch_69a38cb1d5808190b548efd55de09523 completed March 1, 2026, 12:47 a.m.
NED2 Entity disambiguation (via description) batch_69a38d10782c8190beead28963b003ab completed March 1, 2026, 12:49 a.m.
PD Predicate disambiguation batch_69a25b70d99c819085d8381a313a2a34 completed Feb. 28, 2026, 3:05 a.m.
Created at: Feb. 28, 2026, 2:57 a.m.