Secure is similar to Tight. Tight is the opposite of Open. Open is a synonym of Accessible. 
you are likely to find Arena in/at/on City. Arena is related to Stadium. you are likely to find Athlete in/at/on Stadium. Athlete is related to Good. 
Secure <--SimilarTo--> Tight <--Antonym--> Open <--Synonym--> Accessible 
City <--AtLocation-- Arena <--RelatedTo--> Stadium <--AtLocation-- Athlete <--RelatedTo--> Good 