CREATE TABLE table_name_46 (Running VARCHAR, channel VARCHAR, date VARCHAR)

What is the running time of the transmission on bbc four channels on 23 March 2008?
SELECT Running AS time FROM table_name_46 WHERE channel = "bbc four" AND date = "23 march 2008"
SELECT "Running" AS "time" FROM "table_name_46" WHERE "23 march 2008" = "date" AND "bbc four" = "channel"