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_name_36 ( dvd_volume VARCHAR, identity_ies_ VARCHAR )

### Question ###
How many DVD volumes was identified by Skippy Johnson?

### Accurate SQL ###

SELECT dvd_volume FROM table_name_36 WHERE identity_ies_ = "skippy johnson"