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_73076 ( "Round" text, "Clubs remaining" real, "Clubs involved" real, "Winners from previous round" text, "New entries this round" text, "Leagues entering this round" text )

### Question ###
Name the least clubs involved for leagues being none for semi finals

### Accurate SQL ###

SELECT MIN("Clubs involved") FROM table_73076 WHERE "Leagues entering this round" = 'none' AND "Round" = 'Semi finals'