Question: What is the highest capacity for the venue, Ticha Stadium, located in Varna?
SQL: SELECT MAX("Capacity") FROM "2-17591791-1" WHERE "Location" = 'Varna' AND "Venue" = 'Ticha Stadium';

Question: What is the highest capacity for the venue of the club, Vihren?
SQL: SELECT MAX("Capacity") FROM "2-17591791-1" WHERE "Club" = 'Vihren';

Question: What is the total number of capacity for the venue of the club, pirin?
SQL: SELECT COUNT("Capacity") FROM "2-17591791-1" WHERE "Club" = 'pirin';