Complex sentence: Cohen also acknowledged he was not the first to turn Cold War fears into science-fiction drama; such fears had influenced such films as "Invasion of the Body Snatchers" and especially "I Married a Monster from Outer Space".
Split into simpler sentences: Cohen also acknowledged he was not the first to turn Cold War fears into science-fiction drama. As noted above, such fears had influenced such films as "Invasion of the Body Snatchers" and especially "I Married a Monster from Outer Space".