Biology wikidata glossary/Double Taxonomic Wikidata Items

Most biology wikicommons categories have a link to a couple of wikidata items:

• item 1: a Wikidata Category Item, with:
  • P301 (category's main topic) = item 2.

  Example 'Category:Achariaceae' (Q8833475)

• item 2: a Wikidata Taxon Item, with:
  • P910 (topic's main category) = item 1.

  Example 'Achariaceae' (Q651518)

At the center, the double wikidata items

Example: Category:Neoptera has a Double Taxonomic Wikidata Item: 'Category:Neoptera' (Q9850796) + 'Neoptera' (Q23005)