Table:
text: List of world cups and world championships for juniors and youth
Women
Women
Sport Competition_name Competing_entities Age_groups Held_every
Rowing Junior World Rowing Championships Nations 18 or younger One year
Sailing ISAF Youth Sailing World Championships Nations Under 19`s annually
Sailing ISAF Classes World Championship Held in the Optimist, Splash, Zoom, RS Tera etc. 19 or younger Various
Speed skating World Junior Speed Skating Championships Individuals and Nations 19 or younger One year
Speed skating ISU Junior World Cup Speed Skating Individuals and Nations 19 or younger One year
Table tennis World Junior Table Tennis Championships Individuals [D ] and Nations 18 or younger One year
Volleyball Women`s Junior Volleyball World Championship Nations 20 or younger Two years
Volleyball Girls Youth Volleyball World Championship Nations 18 or younger Two years

text: List of world cups and world championships for juniors and youth
Women
Women
Sport Competition_name Competing_entities Age_groups Held_every
Aquatics FINA World Junior Swimming Championships Individuals [R ] 17 or younger Two years
Athletics IAAF World Junior Championships in Athletics Individuals [R ] 18-19 Two years
Athletics IAAF World Youth Championships in Athletics Individuals [R ] 17 or younger Two years
Badminton BWF World Junior Championships Individuals [D ] 19 or younger One year
Bandy Bandy World Championships for Women U-17 Nations 17 or younger Two years
Basketball FIBA Under-21 World Championship for Women Nations 21 or younger Only 2003 and 2007

text: List of world cups and world championships for juniors and youth
Women
Women
Sport Competition_name Competing_entities Age_groups Held_every
Basketball FIBA Under-19 World Championship for Women Nations 19 or younger Four years until 2005, now two years
Basketball FIBA Under-17 World Championship for Women Nations 17 or younger Two years
Basketball FIBA 3x3 U-18 World Championships Nations 18 or younger Year
Figure skating World Junior Figure Skating Championships Individuals 13-19 One year
Football (soccer) FIFA U-20 Women`s World Cup Nations 20 or younger Two years
Football (soccer) FIFA U-17 Women`s World Cup Nations 17 or younger Two years
Ice hockey IIHF World Women`s U18 Championships Nations 18 or younger One year
Lacrosse Under-19 World Lacrosse Championships Nations 19 or younger Four years
Netball World Youth Netball Championships Nations 21 or younger Four years

Question: What are the participating organizations in the Junior and Youth Women's World Cups and World Championships list if the age group is 18 or under, is all one year and the sport is table tennis?