"Frederick II, The Gentle (Friedrich, der Sanftmütige; Frederick the Gentle) (22 August 1412 – 7 September 1464) was Elector of Saxony (1428–1464) and was Landgrave of Thuringia (1440–1445)." - (en.wikipedia.org 12.06.2020)
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(The left column lists the relations of this actor to objects in the right column. In the middle you find other actors in relation to the same objects.)