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_27753492_2 (womens_doubles VARCHAR, mixed_doubles VARCHAR, tour VARCHAR)

### Question ###
Who were the womens doubles when the mixed doubles were zhang nan zhao yunlei on the tour all england super series?

### Accurate SQL ###

SELECT womens_doubles FROM table_27753492_2 WHERE mixed_doubles = "Zhang Nan Zhao Yunlei" AND tour = "All England Super Series"