Rent is a different concept from Owner. Owner is related to Servant. Servant is related to Occupation. Occupation is related to Career. 
Fog is related to Smoke. Smoke is related to Exhaust. 
Rent <--DistinctFrom--> Owner <--RelatedTo--> Servant <--RelatedTo--> Occupation <--RelatedTo--> Career 
Fog <--RelatedTo--> Smoke <--RelatedTo--> Exhaust 