Rich is related to Cream. Cream is related to Butter. Butter is related to Food. Dog wants (to) Food. 
Shell is related to Ear. Ear is related to Hole. 
Rich <--RelatedTo--> Cream <--RelatedTo--> Butter <--RelatedTo--> Food <--Desires-- Dog 
Shell <--RelatedTo--> Ear <--RelatedTo--> Hole 