Triple

T141539
Position Surface form Disambiguated ID Type / Status
Subject Longfellow House–Washington's Headquarters National Historic Site E2861 entity
Predicate locatedIn P40 FINISHED
Object Brattle Street Historic District
Brattle Street Historic District is a historic neighborhood in Cambridge, Massachusetts, known for its well-preserved 18th- and 19th-century residences and its association with prominent figures of American history.
 E17960 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: Brattle Street Historic District | Statement: [Longfellow House–Washington's Headquarters National Historic Site, locatedIn, Brattle Street Historic District]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Brattle Street Historic District
Context triple: [Longfellow House–Washington's Headquarters National Historic Site, locatedIn, Brattle Street Historic District]
  • 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. 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.
  • C. 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.
  • 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. 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.
  • 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: Brattle Street Historic District
Triple: [Longfellow House–Washington's Headquarters National Historic Site, locatedIn, Brattle Street Historic District]
Generated description
Brattle Street Historic District is a historic neighborhood in Cambridge, Massachusetts, known for its well-preserved 18th- and 19th-century residences and its association with prominent figures of American history.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Brattle Street Historic District
Target entity description: Brattle Street Historic District is a historic neighborhood in Cambridge, Massachusetts, known for its well-preserved 18th- and 19th-century residences and its association with prominent figures of American history.
  • 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. 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.
  • C. 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.
  • 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. 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.
  • 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_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_69a2c52c563c81908a53f3dbe1eb7455 completed Feb. 28, 2026, 10:36 a.m.
NEDg Description generation batch_69a2c5f4c6c08190a54543e7cbdbae14 completed Feb. 28, 2026, 10:39 a.m.
NED2 Entity disambiguation (via description) batch_69a2c658297481908c6d6a845be7152c completed Feb. 28, 2026, 10:41 a.m.
Created at: Feb. 28, 2026, 2:31 a.m.