Simplify the following text for a Grade 8 native English-speaking person.
Original: Professor Geoffrey Ian Gallop ( born 27 September 1951 ) was the 27th Premier of Western Australia from 10 February 2001 to 16 January 2006 .
Simplified: Geoffrey Ian Gallop , AC ( born 27 September 1951 ) is an Australian academic and former politician . He was the Premier of Western Australia from 2001 to 2006 .