What is associated with: a row of purple seats rings this ball park to mark a spot thats exactly 5280 feet above sea level?

Based on the clue 'a rounded mass of chewing gum', what is the answer? Based on the clue 'a rounded mass of radicchio for example', what is the answer? Based on the clue 'a rouser may rouse this low class of people', what is the answer? Based on the clue 'a routine thats a standard part of a comedians rep...', what is the answer? Based on the clue 'a rowel is the spiked wheel at the back of this co...', what is the answer? Based on the clue 'a royal horse guard during world war ii he revisit...', what is the answer? What is associated with: a royal observatory was founded in this london borough in 1675? What is associated with: a royal sounding january 6 holiday or a 1999 george clooney film?