Difficult is related to Complicated. Romance can be Complicated. Romance is a synonym of Latin. 
Flight is a type of Trip. Shoe can Trip. Shoe is related to Department. Department is related to Manager. 
Difficult <--RelatedTo--> Complicated <--HasProperty-- Romance <--Synonym--> Latin 
Flight --IsA--> Trip <--CapableOf-- Shoe <--RelatedTo--> Department <--RelatedTo--> Manager 