Complex sentence: Its main inspirer was the lawyer, politician and law professor Jaime Guzmán, a civilian Augusto Pinochet's collaborator, and a senator from 1990 until his assassination on April 1,1991.
Split into simpler sentences: Its main inspirer was the lawyer, politician and law professor Jaime Guzmán, a civilian who collaborated with Augusto Pinochet. Guzmán was a senator from 1990 until his assassination on April 1,1991.