Portrait of Willem Cornelis Backer (1739-1809)
type: Thing
description: painting by anonymous
additional property: PropertyValue
  property ID: P18
  value: Anonymous - Willem Cornelis Backer (1739-1809) - SB 6478 - Amsterdam Museum.jpg
additional property: PropertyValue
  property ID: P31
  value: painting
additional property: PropertyValue
  property ID: P136
  value: portrait
additional property: PropertyValue
  property ID: P180
  value: Willem Cornelis Backer
additional property: PropertyValue
  property ID: P195
  value: Amsterdam Museum
additional property: PropertyValue
  property ID: P217
  value: SB 6478
additional property: PropertyValue
  property ID: P276
  value: Amsterdam Museum
additional property: PropertyValue
  property ID: P571
  value: January 1, 1849
additional property: PropertyValue
  property ID: P921
  value: Willem Cornelis Backer
additional property: PropertyValue
  property ID: P1184
  value: 11259/collection.50826
additional property: PropertyValue
  property ID: P1476
  value: Willem Cornelis Backer (1739-1809)
additional property: PropertyValue
  property ID: P8922
  value: 50826
additional property: PropertyValue
  property ID: P13172
  value: amsterdam-museum/SB-6478
confidence:
  popularity graph score:
    score: 0.0
    score pct: 0
    tier: long_tail
    components:
      sitelinks: 0
      sitelinks norm: 0.0
      unique citations: 3
      unique citations norm: 0.001
      monthly pageviews: 0
      monthly pageviews norm: 0.0
  sitelinks: 0
  unique citations: 3
  monthly pageviews: 0
  yearly pageviews: 0
  tier: long_tail
claims:
  P18:
    value: Anonymous - Willem Cornelis Backer (1739-1809) - SB 6478 - Amsterdam Museum.jpg
    source count: 0
    confidence: 0.0
  P31:
    value: Q3305213
    source count: 1
    confidence: 0.2
    value label: painting
  P136:
    value: Q134307
    source count: 1
    confidence: 0.2
    value label: portrait
  P180:
    value: Q48199817
    source count: 0
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    value label: Willem Cornelis Backer
  P195:
    value: Q1820897
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    confidence: 0.2
    value label: Amsterdam Museum
    qualifiers:
      P580: +1954-06-16T00:00:00Z
  P217:
    value: SB 6478
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    confidence: 0.2
  P276:
    value: Q1820897
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    value label: Amsterdam Museum
  P571:
    value: +1849-01-01T00:00:00Z
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  P921:
    value: Q48199817
    source count: 0
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    value label: Willem Cornelis Backer
  P1184:
    value: 11259/collection.50826
    source count: 0
    confidence: 0.0
  P1476:
    value: Willem Cornelis Backer (1739-1809)
    source count: 1
    confidence: 0.2
  P8922:
    value: 50826
    source count: 0
    confidence: 0.0
  P13172:
    value: amsterdam-museum/SB-6478
    source count: 0
    confidence: 0.0
citations:
  retrieved: 2024-12-26
meta:
  wikidata id: Q17542572
  domain: painting
  level: standard
  html url: https://4ort.xyz/entity/portrait-of-willem-cornelis-backer-1739-1809-
  markdown url: https://4ort.xyz/entity/portrait-of-willem-cornelis-backer-1739-1809-.md
  facts url summary: https://4ort.xyz/entity/portrait-of-willem-cornelis-backer-1739-1809-/facts.json
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  facts url full: https://4ort.xyz/entity/portrait-of-willem-cornelis-backer-1739-1809-/facts.json
  data source: Wikidata (CC0 / public domain)
  license: https://creativecommons.org/publicdomain/zero/1.0/
  api version: v1
  served at: 2026-08-07T16:57:31.864562Z
  entity updated at: 2026-05-03T18:28:36.114423+00:00Z
  entity created at: 2026-05-03T15:25:07.459014+00:00Z