Complex sentence: Anyer Antonio Blanco is a Cuban dissident, whose anti-regime activities are based out of his hometown of Santiago and who served 6 years as a self-described political prisoner in Cuban jails until his release in 2012.
Split into simpler sentences: Anyer Antonio Blanco is a Cuban dissident, whose anti-regime activities are based in his hometown of Santiago. He has served six years as a self-described political prisoner in Cuban jails until his release in 2012.