Ongoing is related to Repeat. Repeat is related to Continue. Continuing is a form of Continue. Continuing is a synonym of Chronic. 
you are likely to find Senior in/at/on Park. Senior is related to Chief. Chief is related to Site. 
Ongoing <--RelatedTo--> Repeat <--RelatedTo--> Continue <--FormOf-- Continuing <--Synonym--> Chronic 
Park <--AtLocation-- Senior <--RelatedTo--> Chief <--RelatedTo--> Site 