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_24540893_6 (pick__number VARCHAR, school VARCHAR, position VARCHAR)

### Question ###
What numbered pick attended western ontario and is an OL?

### Accurate SQL ###

SELECT pick__number FROM table_24540893_6 WHERE school = "Western Ontario" AND position = "OL"