CREATE TABLE table_name_53 (episodes INT, first_aired VARCHAR)

Of the series that first aired April 8, 2011, what is the total number of episodes?
SELECT SUM(episodes) FROM table_name_53 WHERE first_aired = "april 8, 2011"
SELECT SUM("episodes") FROM "table_name_53" WHERE "april 8, 2011" = "first_aired"