Correspondent is related to War. War is related to Problem. Problem is related to Disease. 
Significant is similar to Considerable. Considerable is related to Large. Large is a synonym of Prominent. 
Correspondent <--RelatedTo--> War <--RelatedTo--> Problem <--RelatedTo--> Disease 
Significant <--SimilarTo--> Considerable <--RelatedTo--> Large <--Synonym--> Prominent 