Express is related to Driving. Parking is a type of Driving. Parking is related to Dock. 
Colony is related to Group. Group is related to Staff. Staff is related to Hospital. Hospital is related to Sick. 
Express <--RelatedTo--> Driving <--IsA-- Parking <--RelatedTo--> Dock 
Colony <--RelatedTo--> Group <--RelatedTo--> Staff <--RelatedTo--> Hospital <--RelatedTo--> Sick 