Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_37 ( competing_entities VARCHAR, sport VARCHAR, age_groups VARCHAR, held_every VARCHAR )

### Question ###
what is the competing entities when the age group is 18 or younger, held every is one year and the sport is table tennis?

### Accurate SQL ###

SELECT competing_entities FROM table_name_37 WHERE age_groups = "18 or younger" AND held_every = "one year" AND sport = "table tennis"