Triple

T145804
Position Surface form Disambiguated ID Type / Status
Subject Braintree branch E3326 entity
Predicate hasStation P35 FINISHED
Object North Quincy station
North Quincy station is a rapid transit stop on Boston's MBTA Red Line serving the North Quincy neighborhood in Quincy, Massachusetts.
 E38634 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: North Quincy station | Statement: [Braintree branch, hasStation, North Quincy station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: North Quincy station
Context triple: [Braintree branch, hasStation, North Quincy station]
  • A. Ruggles station
    Ruggles station is a major multimodal transit hub in Boston, Massachusetts, serving MBTA Orange Line trains, multiple commuter rail lines, and numerous bus routes.
  • B. Braintree station
    Braintree station is a Massachusetts Bay Transportation Authority (MBTA) rapid transit and commuter rail station in Braintree, Massachusetts, serving as a major park-and-ride hub on Boston’s South Shore.
  • C. Wellington Station (MBTA)
    Wellington Station (MBTA) is an Orange Line rapid transit station in Medford, Massachusetts, serving as a key park-and-ride and bus transfer hub just north of downtown Boston.
  • 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. Littleton/Route 495 station
    Littleton/Route 495 station is a Massachusetts Bay Transportation Authority commuter rail stop in Littleton, Massachusetts, serving the Fitchburg Line near Interstate 495.
  • 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: North Quincy station
Triple: [Braintree branch, hasStation, North Quincy station]
Generated description
North Quincy station is a rapid transit stop on Boston's MBTA Red Line serving the North Quincy neighborhood in Quincy, Massachusetts.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: North Quincy station
Target entity description: North Quincy station is a rapid transit stop on Boston's MBTA Red Line serving the North Quincy neighborhood in Quincy, Massachusetts.
  • A. Ruggles station
    Ruggles station is a major multimodal transit hub in Boston, Massachusetts, serving MBTA Orange Line trains, multiple commuter rail lines, and numerous bus routes.
  • B. Braintree station
    Braintree station is a Massachusetts Bay Transportation Authority (MBTA) rapid transit and commuter rail station in Braintree, Massachusetts, serving as a major park-and-ride hub on Boston’s South Shore.
  • C. Wellington Station (MBTA)
    Wellington Station (MBTA) is an Orange Line rapid transit station in Medford, Massachusetts, serving as a key park-and-ride and bus transfer hub just north of downtown Boston.
  • 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. Littleton/Route 495 station
    Littleton/Route 495 station is a Massachusetts Bay Transportation Authority commuter rail stop in Littleton, Massachusetts, serving the Fitchburg Line near Interstate 495.
  • 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_69a252868de4819080e21c9938bfe8b6 completed Feb. 28, 2026, 2:27 a.m.
NER Named-entity recognition batch_69a257ea7eac8190884a53453a9e0dd6 completed Feb. 28, 2026, 2:50 a.m.
NED1 Entity disambiguation (via context triple) batch_69a3ab9a92ec81909ef194ae72cffce2 completed March 1, 2026, 2:59 a.m.
NEDg Description generation batch_69a3abf92ad08190a84718c3c0fa59c0 completed March 1, 2026, 3:01 a.m.
NED2 Entity disambiguation (via description) batch_69a3ac13384c81909e7baab651eb15ec completed March 1, 2026, 3:01 a.m.
Created at: Feb. 28, 2026, 2:31 a.m.