Mess is etymologically related to Mass. Mass is a type of Prayer. Prayer is related to Reflection. Mirror can be used for Reflection. 
Brutal is the opposite of Gentle. Gentle is related to Good. Music can be Good. Concert is a type of Music. 
Mess --EtymologicallyRelatedTo--> Mass --IsA--> Prayer <--RelatedTo--> Reflection <--UsedFor-- Mirror 
Brutal <--Antonym--> Gentle <--RelatedTo--> Good <--HasProperty-- Music <--IsA-- Concert 