Pole is a type of Opinion. Pole is related to Tree. Tree is related to Shade. Shade is a type of Screen. 
Career is related to Path. Path is related to Road. Road is related to Branch. Branch is related to Plant. 
Opinion <--IsA-- Pole <--RelatedTo--> Tree <--RelatedTo--> Shade --IsA--> Screen 
Career <--RelatedTo--> Path <--RelatedTo--> Road <--RelatedTo--> Branch <--RelatedTo--> Plant 