Complex sentence: Cramer was born in Denver, Colorado; when he was three years old his parents relocated to St. Petersburg, currently the fourth largest city in Florida, located on the Gulf Coast in Pinellas County.
Split into simpler sentences: Cramer was born in Denver, Colorado; when he was three years old his parents relocated to St. Petersburg, Florida. It is in the 21st century the fourth-largest city in the state, and is located on the Gulf Coast in Pinellas County.