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 ( round INTEGER, pick__number VARCHAR, position VARCHAR )

### Question ###
what is the round when the pick # is less than 236 and the position is offensive guard?

### Accurate SQL ###

SELECT AVG(round) FROM table_name_64 WHERE pick__number < 236 AND position = "offensive guard"