Table: underwater_sports_events
Columns: sport
body
year
event_type
location
nations

Question: What nations participated in 2007?
SQL: SELECT "nations" FROM underwater_sports_events WHERE "year" = '2007'

Question: What event type had BODY CMAS in 1980 and underwater hockey?
SQL: SELECT "event_type" FROM underwater_sports_events 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 underwater_sports_events WHERE "event_type" = 'world championship' AND "sport" = 'underwater target shooting'

Question: What body participated in 1973?
SQL: SELECT "body" FROM underwater_sports_events WHERE "year" = '1973'