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_21321935_2 (fastest_lap VARCHAR, circuit VARCHAR)

### Question ###
Who had the fasted lap in motorsport arena oschersleben?

### Accurate SQL ###

SELECT fastest_lap FROM table_21321935_2 WHERE circuit = "Motorsport Arena Oschersleben"