This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
EulerDiagram DE.svg en An Euler diagram which represents the degenerate conjunctions between things that are Animals Minerals and have four legs de Ein EulerDiagramm welches die Beziehungen zwischen Dingen reprsentiert die Tiere Mineralien oder Lebewesen mit vier Beinen sind based on File EulerDiagram svg Authors of File EulerDiagram