Artificial is related to Man. Man is a type of Lover. Lover is derived from Love. Love would make you want to Sing. 
War is related to Raw. Raw is related to Wood. 
Artificial <--RelatedTo--> Man --IsA--> Lover --DerivedFrom--> Love --CausesDesire--> Sing 
War <--RelatedTo--> Raw <--RelatedTo--> Wood 