Article is related to Dress. Dress is related to Red. 
Sum is a synonym of Union. Union is related to Flag. Flag is related to Symbolic. Symbolic is related to Cross. 
Article <--RelatedTo--> Dress <--RelatedTo--> Red 
Sum <--Synonym--> Union <--RelatedTo--> Flag <--RelatedTo--> Symbolic <--RelatedTo--> Cross 