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_27 ( grade VARCHAR, priority_entry_rights_to_derby VARCHAR )

### Question ###
What is the Grade that has Turf 1600m?

### Accurate SQL ###

SELECT grade FROM table_name_27 WHERE priority_entry_rights_to_derby = "turf 1600m"