Meeting is a type of Assembly. you are likely to find Boss in/at/on Meeting. Boss is the opposite of Servant. Servant is related to Personal. 
Arena can be used for Meeting. Meeting is related to Shake. Shake is related to Drink. 
Assembly <--IsA-- Meeting <--AtLocation-- Boss <--Antonym--> Servant <--RelatedTo--> Personal 
Arena --UsedFor--> Meeting <--RelatedTo--> Shake <--RelatedTo--> Drink 