Systems and methods for generating and playing a sequence of media objects based on a mood gradient are also disclosed. The sealing element features a bonding portion, which is bonded to the inside of the sheet, and includes a sealing lip projecting from the bonding portion, which can be brought into contact with the edge portion of the vehicle body section. The access control device generates tree-structured data from the stored policies, merges these tree-structured data, and stores the merged tree-structured data.