Tidy variant of a radial tree visualization showing links of type "aggravates" for the World Problems entry Ethnic conflict (up to 3 levels).
The source entry is positioned in the middle and the entries connected to it in several levels show in concentric circles around it. As the circles grow in diameter, they naturally make place for more link labels.
All labels are linked to their entry pages. In principle can any level be set and drawn. However, in the case of the Encyclopedia the number of links often increases too rapidly to generate a readable/meaningful or even just a visually pleasing image anywhere above 3 levels.