Complex sentence: In 1958, the surrounding rose gardens and fountain were erected by the Toronto Parks Department and the memorial was re-dedicated to the cause of peace by then Canadian Prime Minister John Diefenbaker on August 20,1958.
Split into simpler sentences: In 1958, the surrounding rose gardens and fountain were erected by the Toronto Parks Department. The memorial and gardens were re-dedicated to the cause of peace by Canadian Prime Minister John Diefenbaker on August 20,1958.