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 visitor (name VARCHAR, Level_of_membership INTEGER, age VARCHAR)

### Question ###
Find the name and membership level of the visitors whose membership level is higher than 4, and sort by their age from old to young.

### Accurate SQL ###

SELECT name, Level_of_membership FROM visitor WHERE Level_of_membership > 4 ORDER BY age DESC