Complex sentence: On 5 and 6 May 2007, a reunion was organised for the alumni and students of Bretton Hall between 1947 and 2007 as a celebration of the school's contribution to the arts industry and also the academic excellence it produced over sixty years.
Split into simpler sentences: On 5 and 6 May 2007, a reunion was organised for the alumni and students of Bretton Hall between 1947 and 2007. This was a celebration of the school's contribution to the arts industry and also the academic excellence it produced over sixty years.