Flag is related to Blue. Blue is related to Prime. Prime is a synonym of Principal. Principal is a synonym of Client. 
Sweet is related to Cake. Cake is related to Birth. Birth is etymologically related to Bear. Bear is related to River. 
Flag <--RelatedTo--> Blue <--RelatedTo--> Prime <--Synonym--> Principal <--Synonym--> Client 
Sweet <--RelatedTo--> Cake <--RelatedTo--> Birth --EtymologicallyRelatedTo--> Bear <--RelatedTo--> River 