Complex sentence: The earthquake originated on the Calaveras Fault (a branch of the San Andreas Fault System) near Coyote Lake and was felt from Santa Rosa in the north to San Luis Obispo in the south.
Split into simpler sentences: The earthquake originated near Coyote Lake on a branch of the San Andreas Fault System called the Calaveras Fault. It was felt from Santa Rosa in the north to San Luis Obispo in the south.