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_68456 ( "Outcome" text, "Date" text, "Surface" text, "Opponent" text, "Score" text )

### Question ###
What is the surface of the match when the outcome was runner-up, and a Score of julia g rges polona hercog?

### Accurate SQL ###

SELECT "Surface" FROM table_68456 WHERE "Outcome" = 'runner-up' AND "Score" = 'julia görges polona hercog'