Divide is related to Mathematics. Mathematics is related to Genre. Genre is related to Mystery. 
Politics is a type of Activity. Activity is related to Task. Task is related to Note. Comment is a type of Note. 
Divide <--RelatedTo--> Mathematics <--RelatedTo--> Genre <--RelatedTo--> Mystery 
Politics --IsA--> Activity <--RelatedTo--> Task <--RelatedTo--> Note <--IsA-- Comment 