sentences:  On 3 October 1956 Zijlstra announced that he was stepping down as Leader of the Anti-Revolutionary Party and Parliamentary leader in favor of Sieuwert Bruins Slot.Following the cabinet formation of 1956 Zijlstra continued as Minister of Economic Affairs in the Cabinet Drees III, taking office on 13 October 1956.The Cabinet Drees III fell on 11 December 1958 and continued to serve in a demissionary capacity until it was replaced by the caretaker Cabinet Beel II with Zijlstra remaining as Minister of Economic Affairs and appointed as Minister of Finance dual serving in both positions, taking office on 22 December 1958.