Which closed/not running Yelp business in "Sun City" has got the most reviews? Give the business id.
closed/not running refers to active = 'False'; most reviews refers to MAX(COUNT(user_id));
SELECT T1.business_id FROM Business AS T1 INNER JOIN Reviews AS T2 ON T1.business_id = T2.business_id WHERE T1.city LIKE 'Sun City' AND T1.active LIKE 'FALSE' GROUP BY T1.business_id ORDER BY COUNT(T2.review_length) DESC LIMIT 1