How many times was the politician who was premier of South Australia when William Copley was Minister for Agriculture and Education, premier ?
William Copley (South Australian politician):  He was Leader of the Opposition for a period in 1896, and served as Commissioner for Crown Lands and Immigration (1890-1892) and Minister for Agriculture and Education (1892) under Thomas Playford II and Chief Secretary (1893) and Minister for Agriculture and Education (1892-1893) under John Downer. John Downer: Sir John William Downer, KCMG, KC (6 July 1843 – 2 August 1915) was the Premier of South Australia twice, from 16 June 1885 until 11 June 1887 and again from 1892 to 1893.
twice