East is related to Rice. Rice is related to Content. Content is related to Happiness. Happiness can cause/lead to Laughter. 
Partner is related to King. King is related to Rank. Rank is related to Official. 
East <--RelatedTo--> Rice <--RelatedTo--> Content <--RelatedTo--> Happiness --Causes--> Laughter 
Partner <--RelatedTo--> King <--RelatedTo--> Rank <--RelatedTo--> Official 