Performance is related to Audience. you are likely to find Audience in/at/on Stadium. you are likely to find Player in/at/on Stadium. Player is the opposite of Gentleman. 
Virtual is the opposite of Legal. Legal is related to Trial. Trial is related to Drama. 
Performance <--RelatedTo--> Audience --AtLocation--> Stadium <--AtLocation-- Player <--Antonym--> Gentleman 
Virtual <--Antonym--> Legal <--RelatedTo--> Trial <--RelatedTo--> Drama 