Complex sentence: On February 4,1974, the 19-year-old Hearst was kidnapped from her Berkeley, California apartment, which she shared with her fiancé Steven Weed, by a left-wing urban guerrilla group called the Symbionese Liberation Army (SLA).
Split into simpler sentences: On February 4,1974, the 19-year-old Hearst was kidnapped from her Berkeley, California apartment. Resposibility was claimed by an urban guerrilla group called the Symbionese Liberation Army (SLA).