Intensity is derived from Intense. Intense is related to Scholar. Historian is a type of Scholar. 
Tag is related to Sale. Sale is related to Low. Low is related to Voice. 
Intensity --DerivedFrom--> Intense <--RelatedTo--> Scholar <--IsA-- Historian 
Tag <--RelatedTo--> Sale <--RelatedTo--> Low <--RelatedTo--> Voice 