Complex sentence: The Illawarra Folk Festival started in 1985 in the dairy-farming village of Jamberoo in New South Wales and has grown to be one of the largest festivals in Australia run entirely by volunteers.
Split into simpler sentences: The Illawarra Folk Festival started in 1985 in the dairy-farming village of Jamberoo in New South Wales, Australia. It has grown to become one of the largest festivals in Australia run entirely by volunteers.