System is related to Justice. Court can be used for Justice. Court is a type of Residence. 
Acknowledge is a type of Thank. Favor would make you want to Thank. Favor is related to Cake. 
System <--RelatedTo--> Justice <--UsedFor-- Court --IsA--> Residence 
Acknowledge --IsA--> Thank <--CausesDesire-- Favor <--RelatedTo--> Cake 