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_80153 ( "Year" text, "Men's singles" text, "Women's singles" text, "Men's doubles" text, "Women's doubles" text, "Mixed doubles" text )

### Question ###
Who won the Mixed doubles when Juliane Schenk won the Women's Singles?

### Accurate SQL ###

SELECT "Mixed doubles" FROM table_80153 WHERE "Women's singles" = 'juliane schenk'