Triple

T141468
Position Surface form Disambiguated ID Type / Status
Subject Harvard Square E2859 entity
Predicate hasPart P35 FINISHED
Object Harvard Square subway station
Harvard Square subway station is a key Red Line stop on Boston’s MBTA system, serving the Harvard University area in Cambridge, Massachusetts.
E2859 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: Harvard Square subway station | Statement: [Harvard Square, hasPart, Harvard Square subway station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Harvard Square subway station
Context triple: [Harvard Square, hasPart, Harvard Square subway station]
  • A. South Station
    South Station is Boston’s major intercity rail and bus terminal and a key MBTA subway hub in the city’s downtown.
  • B. 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.
  • C. North Station
    North Station is a major transportation hub in Boston, Massachusetts, serving as a key commuter rail, subway, and intercity bus terminal integrated with the TD Garden arena.
  • D. Harvard Square
    Harvard Square is a historic commercial and cultural center in Cambridge, Massachusetts, known for its vibrant mix of shops, restaurants, street performers, and its proximity to Harvard University.
  • E. Belmont Center station
    Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
  • 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: Harvard Square subway station
Triple: [Harvard Square, hasPart, Harvard Square subway station]
Generated description
Harvard Square subway station is a key Red Line stop on Boston’s MBTA system, serving the Harvard University area in Cambridge, Massachusetts.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Harvard Square subway station
Target entity description: Harvard Square subway station is a key Red Line stop on Boston’s MBTA system, serving the Harvard University area in Cambridge, Massachusetts.
  • A. South Station
    South Station is Boston’s major intercity rail and bus terminal and a key MBTA subway hub in the city’s downtown.
  • B. 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.
  • C. North Station
    North Station is a major transportation hub in Boston, Massachusetts, serving as a key commuter rail, subway, and intercity bus terminal integrated with the TD Garden arena.
  • D. Harvard Square chosen
    Harvard Square is a historic commercial and cultural center in Cambridge, Massachusetts, known for its vibrant mix of shops, restaurants, street performers, and its proximity to Harvard University.
  • E. Belmont Center station
    Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
  • F. None of above.

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_69a2521e35c08190b28e5c9f1e3c9b59 completed Feb. 28, 2026, 2:25 a.m.
NER Named-entity recognition batch_69a257c7e79c8190b3e5a2983035a972 completed Feb. 28, 2026, 2:49 a.m.
NED1 Entity disambiguation (via context triple) batch_69a3736b2ff081909a5b36a93fa16130 completed Feb. 28, 2026, 10:59 p.m.
NEDg Description generation batch_69a3741398148190b33de6d93ccc0725 completed Feb. 28, 2026, 11:02 p.m.
NED2 Entity disambiguation (via description) batch_69a3746ba85c8190bd45c2a5717317dc completed Feb. 28, 2026, 11:04 p.m.
Created at: Feb. 28, 2026, 2:31 a.m.