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_64 (ordinary_value VARCHAR, russian VARCHAR)

### Question ###
Which ordinary value has a Russian value of унция?

### Accurate SQL ###

SELECT ordinary_value FROM table_name_64 WHERE russian = "унция"