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_67 ( year INTEGER, rider VARCHAR, final_position___giro VARCHAR, final_position___tour VARCHAR, final_position___vuelta VARCHAR )

### Question ###
What is the earliest year of Valdimir Poelnikov, who has a final position-tour bigger than 72, a final position-vuelta less than 77, and a final position-giro less than 57?

### Accurate SQL ###

SELECT MIN(year) FROM table_name_67 WHERE final_position___tour > 72 AND final_position___vuelta < 77 AND final_position___giro < 57 AND rider = "valdimir poelnikov"