@prefix schema: <https://schema.org/> .
@prefix af: <https://anchorfact.org/ns#> .

<https://anchorfact.org/kb/science/periodic-table>
  a schema:TechArticle ;
  schema:headline "Periodic Table" ;
  schema:url <https://anchorfact.org/science/periodic-table/> ;
  af:status "public" ;
  af:confidence "medium" ;
  af:confidenceScore "0.865" ;
  af:confidenceBasis "verified_sources" ;
  af:generationMethod "ai_structured" .

<https://anchorfact.org/kb/science/periodic-table>
  schema:citation <https://iupac.org/what-we-do/periodic-table-of-elements/> ;
  af:sourceTier "S" .

<https://anchorfact.org/kb/science/periodic-table>
  schema:citation <https://www.britannica.com/science/periodic-table> ;
  af:sourceTier "B" .

<https://anchorfact.org/kb/science/periodic-table>
  schema:citation <https://iupac.org/four-new-elements-complete-seventh-row/> ;
  af:sourceTier "S" .