Chicken is related to Disease. Disease is a different concept from Health. Health is related to Body. Body is related to Member. 
Ocean is related to Half. Half is related to Sale. Sale is related to Event. Execution is a type of Event. 
Chicken <--RelatedTo--> Disease <--DistinctFrom--> Health <--RelatedTo--> Body <--RelatedTo--> Member 
Ocean <--RelatedTo--> Half <--RelatedTo--> Sale <--RelatedTo--> Event <--IsA-- Execution 