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_26257223_13 ( sprints_classification VARCHAR, general_classification VARCHAR )

### Question ###
Who led sprints classification when Chris Horner led general classification?

### Accurate SQL ###

SELECT sprints_classification FROM table_26257223_13 WHERE general_classification = "Chris Horner"