Complex sentence: Before Hill, who was first elected in 1993, the riding was represented by Frank Oberle of the Progressive Conservative Party since 1972 and served as Canada's Minister of Science and Technology in 1985 and Minister of Forestry in 1989.
Split into simpler sentences: Before Hill, who was first elected in 1993, the riding had been represented by Frank Oberle of the Progressive Conservative Party since 1972. Oberle served as Canada's Minister of Science and Technology in 1985 and Minister of Forestry in 1989.