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_15059783_1 (team_classification VARCHAR, combination_classification VARCHAR, points_classification VARCHAR)

### Question ###
How many teams have a combination classification of Alejandro Valverde and a Points classification of Alessandro Petacchi?

### Accurate SQL ###

SELECT COUNT(team_classification) FROM table_15059783_1 WHERE combination_classification = "Alejandro Valverde" AND points_classification = "Alessandro Petacchi"