Complex sentence: A Miami Herald investigative report pointed that the person responsible for planting the bomb was a member of a pro-Sandinista Argentine group named Vital Roberto Gaguine who was supposedly killed in a 1989 attack on an Argentine military base.
Split into simpler sentences: A Miami Herald investigative report pointed that the person who planted the bomb was a member of a pro-Sandinista Argentine group named Vital Roberto Gaguine. Supposedly he was killed in a 1989 attack on an Argentine military base.