CREATE TABLE table_19114172_11 (date_of_return VARCHAR, new_channel_s_ VARCHAR)

When bbc two is the new channel what is the date of return?
SELECT date_of_return FROM table_19114172_11 WHERE new_channel_s_ = "BBC Two"
SELECT "date_of_return" FROM "table_19114172_11" WHERE "BBC Two" = "new_channel_s_"