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_27573848_18 (points_classification VARCHAR, general_classification VARCHAR, mountains_classification VARCHAR)

### Question ###
If the mountains classification is Mathias Frank, and the General Classification is Fabian Cancellara, what is the Points classification?

### Accurate SQL ###

SELECT points_classification FROM table_27573848_18 WHERE general_classification = "Fabian Cancellara" AND mountains_classification = "Mathias Frank"