you are likely to find Flat in/at/on City. you are likely to find Courtroom in/at/on City. 
Order is the opposite of Suggestion. Suggestion is a type of Proposal. Proposal is a synonym of Offer. 
Flat --AtLocation--> City <--AtLocation-- Courtroom 
Order <--Antonym--> Suggestion --IsA--> Proposal <--Synonym--> Offer 