Table: world_cups_juniors
Columns: sport
competition_name
competing_entities
age_groups
held_every

Question: What are the age groups for the Big League World Series?
SQL: SELECT "age_groups" FROM world_cups_juniors WHERE "competition_name" = 'big league world series'

Question: How often is the table tennis competition held?
SQL: SELECT "held_every" FROM world_cups_juniors WHERE "sport" = 'table tennis'

Question: How often is the cricket competition held?
SQL: SELECT "held_every" FROM world_cups_juniors WHERE "sport" = 'cricket'