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_9578 ( "Name" text, "Rank" text, "Tenure" text, "Date of death" text, "Cause of death" text )

### Question ###
What is Detective Donald William Schneider's Cause of death?

### Accurate SQL ###

SELECT "Cause of death" FROM table_9578 WHERE "Rank" = 'detective' AND "Name" = 'donald william schneider'