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 ( basketball VARCHAR, cross_country VARCHAR, track_ VARCHAR, _field VARCHAR )

### Question ###
who won basketball when ashland won track & field and cross country

### Accurate SQL ###

SELECT basketball FROM table_16423070_4 WHERE track_ & _field = "Ashland" AND cross_country = "Ashland"