Complex sentence: As a single from the "Duty" trilogy, which included Hamasaki's singles "Vogue" and "Seasons", the singles were released as DVD singles and on VHS; it included the three mini-music videos, alongside the making videos and a TV commercial.
Split into simpler sentences: As a single from the "Duty" trilogy, which included Hamasaki's singles "Vogue" and "Seasons", the singles were released as a DVD single and VHS. It included the three mini-music videos, alongside the making videos and a TV commercial.