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_16423070_4 (volleyball VARCHAR, school_year VARCHAR, basketball VARCHAR, swimming VARCHAR)

### Question ###
Who won volleyball when west holmes won basketball and wooster won swimming in 2011-12

### Accurate SQL ###

SELECT volleyball FROM table_16423070_4 WHERE basketball = "West Holmes" AND swimming = "Wooster" AND school_year = "2011-12"