Complex sentence: The Country Carnival was discontinued in favour of State Championships in 1983, and the format of competition has varied over time, but City-Country matches between the Brisbane and Queensland Country representative teams have remained regular fixtures since.
Split into simpler sentences: The Country Carnival was discontinued in favour of State Championships in 1983. While the format of competition has varied over time, City-Country matches between the Brisbane and Queensland Country representative teams have remained regular fixtures since.