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 party ( Party_Theme VARCHAR, Number_of_hosts VARCHAR )

### Question ###
List the themes of parties in ascending order of number of hosts.

### Accurate SQL ###

SELECT Party_Theme FROM party ORDER BY Number_of_hosts