Flag is related to Symbol. Marker is a type of Symbol. Marker is related to Claim. 
Elaborate is the opposite of Plain. Plain is related to Special. Special is a synonym of Particular. Particular is related to Like. 
Flag <--RelatedTo--> Symbol <--IsA-- Marker <--RelatedTo--> Claim 
Elaborate <--Antonym--> Plain <--RelatedTo--> Special <--Synonym--> Particular <--RelatedTo--> Like 