Original: Ovid completes Tristia (the "Sorrows", 5 books) and Epistulae ex Ponto (Letters from the Black Sea, 4 books) describing the sadness of banishment.
Simplified: Ovid completes Tristia (the "Sorrows") (5 books) and Epistulae ex Ponto (Letters from the Black Sea) (4 books) describing the sadness of banishment.