Topic is a type of Content. Content is related to Feeling. Feeling is related to Complete. Close is a type of Complete. 
Flash is related to Content. Content is a type of Collection. Collection is related to Array. 
Topic --IsA--> Content <--RelatedTo--> Feeling <--RelatedTo--> Complete <--IsA-- Close 
Flash <--RelatedTo--> Content --IsA--> Collection <--RelatedTo--> Array 