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_name_46 ( Running VARCHAR, channel VARCHAR, date VARCHAR )

### Question ###
What is the running time of the transmission on bbc four channels on 23 March 2008?

### Accurate SQL ###

SELECT Running AS time FROM table_name_46 WHERE channel = "bbc four" AND date = "23 march 2008"