CREATE TABLE competition_result (competition_id NUMBER, club_id_1 NUMBER, club_id_2 NUMBER, score CLOB)
CREATE TABLE competition (competition_id NUMBER, year NUMBER, competition_type CLOB, country CLOB)
CREATE TABLE player (player_id NUMBER, name CLOB, position CLOB, club_id NUMBER, apps NUMBER, tries NUMBER, goals CLOB, points NUMBER)
CREATE TABLE club (club_id NUMBER, name CLOB, region CLOB, start_year CLOB)
CREATE TABLE club_rank (rank NUMBER, club_id NUMBER, gold NUMBER, silver NUMBER, bronze NUMBER, total NUMBER)

what is the name of the country that participated in the most tournament competitions?
SELECT country FROM competition WHERE competition_type = 'Tournament' GROUP BY country ORDER BY COUNT(*) DESC LIMIT 1
SELECT "country" FROM "competition" WHERE "competition_type" = 'Tournament' GROUP BY "country" ORDER BY COUNT(*) DESC FETCH FIRST 1 ROWS ONLY