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 exhibition (theme VARCHAR, YEAR VARCHAR, ticket_price VARCHAR)

### Question ###
Show theme and year for all exhibitions in an descending order of ticket price.

### Accurate SQL ###

SELECT theme, YEAR FROM exhibition ORDER BY ticket_price DESC