MacArthur Foundation — Legal Structure: charity

NoteThe source directly confirms the claim. The Wikidata page for Q1424691 (John D. and Catherine T. MacArthur Foundation) explicitly states under the 'legal form' field that the organization is a 'charity'. This matches the claim that the MacArthur Foundation's legal structure is a charity. The entry also confirms it is a 'private foundation (US)' under 'instance of', which is consistent with being classified as a charity in the US legal context.