Triple

T22755942
Position Surface form Disambiguated ID Type / Status
Subject Centre Block of the Canadian Parliament E562842 entity
Predicate material P618 FINISHED
Object Nepean sandstone
Nepean sandstone is a durable, pale-colored sedimentary building stone historically quarried near Ottawa and widely used in prominent Canadian public architecture.
 E1554184 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: Nepean sandstone | Statement: [Centre Block of the Canadian Parliament, material, Nepean sandstone]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Nepean sandstone
Context triple: [Centre Block of the Canadian Parliament, material, Nepean sandstone]
  • A. Hawkesbury Sandstone
    Hawkesbury Sandstone is a prominent Triassic sedimentary rock formation in the Sydney region of Australia, known for its thick, cliff-forming sandstone beds that shape much of the local landscape and geology.
  • B. New Brunswick sandstone
    New Brunswick sandstone is a durable, reddish-brown building stone historically quarried in New Jersey and widely used in 19th-century American architecture and monuments.
  • C. Berea sandstone
    Berea sandstone is a durable, fine-grained sedimentary building stone historically quarried in Ohio and widely used in prominent 19th-century American architecture and monuments.
  • D. Trinidad Sandstone
    Trinidad Sandstone is a geologic rock formation known for its prominent sandstone layers exposed in parts of the southern Rocky Mountain region of the United States.
  • E. Nugget Sandstone
    Nugget Sandstone is a prominent Jurassic-age sandstone unit of the western United States, best known for its extensive eolian (wind-deposited) dune deposits and its role as a significant reservoir rock in regional geology.
  • 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: Nepean sandstone
Triple: [Centre Block of the Canadian Parliament, material, Nepean sandstone]
Generated description
Nepean sandstone is a durable, pale-colored sedimentary building stone historically quarried near Ottawa and widely used in prominent Canadian public architecture.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Nepean sandstone
Target entity description: Nepean sandstone is a durable, pale-colored sedimentary building stone historically quarried near Ottawa and widely used in prominent Canadian public architecture.
  • A. Hawkesbury Sandstone
    Hawkesbury Sandstone is a prominent Triassic sedimentary rock formation in the Sydney region of Australia, known for its thick, cliff-forming sandstone beds that shape much of the local landscape and geology.
  • B. New Brunswick sandstone
    New Brunswick sandstone is a durable, reddish-brown building stone historically quarried in New Jersey and widely used in 19th-century American architecture and monuments.
  • C. Berea sandstone
    Berea sandstone is a durable, fine-grained sedimentary building stone historically quarried in Ohio and widely used in prominent 19th-century American architecture and monuments.
  • D. Trinidad Sandstone
    Trinidad Sandstone is a geologic rock formation known for its prominent sandstone layers exposed in parts of the southern Rocky Mountain region of the United States.
  • E. Nugget Sandstone
    Nugget Sandstone is a prominent Jurassic-age sandstone unit of the western United States, best known for its extensive eolian (wind-deposited) dune deposits and its role as a significant reservoir rock in regional geology.
  • 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_69e24551ec7881909a9c924dbea155f6 completed April 17, 2026, 2:36 p.m.
NER Named-entity recognition batch_69f179bd22588190ac724a656194f5b9 completed April 29, 2026, 3:23 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0b98150cfc8190a3530e51f0311e33 completed May 18, 2026, 10:52 p.m.
NEDg Description generation batch_6a0b99f7ee848190a4838e757cff7de6 completed May 18, 2026, 11 p.m.
NED2 Entity disambiguation (via description) batch_6a0b9ab1cb508190befa17184bfd8f51 completed May 18, 2026, 11:03 p.m.
Created at: April 17, 2026, 3:25 p.m.