 Complete the following phrase:  The Six Nations Championship, held every year in February and March, is Irelands only annual tournament. It is contested against England, France, Italy, Scotland and Wales. Ireland was a member of the inaugural Home Nations in 1883, with France and Italy joining later to form the Five and Six Nations respectively. Ireland won their first championship in 1894, also winning the Triple Crown. Irelands first Grand Slam occurred in the 1948 season and their second in the 