Gift is a type of Object. Center is a type of Object. 
Pill can be used for Headache. Headache is related to Pain. Pain is the opposite of Feel. Burn is a type of Feel. 
Gift --IsA--> Object <--IsA-- Center 
Pill --UsedFor--> Headache <--RelatedTo--> Pain <--Antonym--> Feel <--IsA-- Burn 