Complex sentence: He was one of the architects of the devaluation of Belgian Frank in 1982 when he worked at the cabinet of Wilfried Martens in the government Martens V. As governor of the NBB, he prepared the entry of Belgium to the Euro in 1999.
Split into simpler sentences: He was one of the architects of the devaluation of Belgian Frank in 1982 when he worked at the cabinet of Wilfried Martens. He prepared the entry of Belgium to the Euro in 1999.