Question: What nations participated in 2007?
SQL: SELECT "Nations" FROM "2-18395182-1" WHERE "Year" = '2007';

Question: What event type had BODY CMAS in 1980 and Underwater hockey?
SQL: SELECT "Event type" FROM "2-18395182-1" WHERE "Body" = 'CMAS' AND "Year" = '1980' AND "Sport" = 'Underwater hockey';

Question: What body is at the World Championship for Underwater target shooting?
SQL: SELECT "Body" FROM "2-18395182-1" WHERE "Event type" = 'World Championship' AND "Sport" = 'Underwater target shooting';

Question: What body participated in 1973?
SQL: SELECT "Body" FROM "2-18395182-1" WHERE "Year" = '1973';