Complex sentence: After his premiership, Van Agt remained in active politics and became the Queen's Commissioner of North Brabant serving from 1 June 1983 until 22 April 1987 when he resigned as Queen's Commissioner because of criticism on his performance and his cooperation with the States-Provincial.
Split into simpler sentences: After his premiership, Van Agt remained in active politics and became the Queen's Commissioner of North Brabant taking office on 1 June 1983. On 22 April 1987 Van Agt resigned as Queen's Commissioner because of criticism on his cooperation with the States-Provincial.