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Term 1: Term 2:

(subclass MusicChart List) Music.kif 1119-1119 Music charts is a subclass of list
(subclass SinglesChart MusicChart) Music.kif 1132-1132 Singles chart is a subclass of music charts
(subclass AlbumChart MusicChart) Music.kif 1144-1144 Album chart is a subclass of music charts


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