Teenage is derived from Age. Age is related to Modern. Modern is a different concept from Past. Past is related to Description. 
Gun is related to Deadly. Deadly is related to Cigarette. 
Teenage --DerivedFrom--> Age <--RelatedTo--> Modern <--DistinctFrom--> Past <--RelatedTo--> Description 
Gun <--RelatedTo--> Deadly <--RelatedTo--> Cigarette 