Complex sentence: The work consists of two sections ("Book I ", Op.35/1 and"Book II", Op.35/2), each with the theme--the Caprice No.24 in A minor by Niccolò Paganini--followed by fourteen variations.
Split into simpler sentences: The work consists of two sections, "Book I" (Op.35/1) and "Book II" (Op.35/2). Each section opens with the theme, the Caprice No.24 in A minor by Niccolò Paganini, followed by fourteen variations.