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_30236 ( "Round" text, "Clubs remaining" real, "Clubs involved" real, "Winners from previous round" text, "New entries this round" text, "Leagues entering at this round" text )

### Question ###
How many clubs were remaining in the preliminary round?

### Accurate SQL ###

SELECT "Clubs remaining" FROM table_30236 WHERE "Round" = 'Preliminary round'