CREATE TABLE table_2799 ("Club" CLOB, "Location" CLOB, "Manager" CLOB, "Stadium" CLOB, "Capacity" FLOAT, "Team captain" CLOB)

How many different team captains does the club Sliven 2000 have?
SELECT COUNT("Team captain") FROM table_2799 WHERE "Club" = 'Sliven 2000'
SELECT COUNT("Team captain") FROM "table_2799" WHERE "Club" = 'Sliven 2000'