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_2147588_4 (vacator VARCHAR, successor VARCHAR)

### Question ###
When nathaniel g. taylor (u) is the successor what is the vacator?

### Accurate SQL ###

SELECT vacator FROM table_2147588_4 WHERE successor = "Nathaniel G. Taylor (U)"