question: Who is the star of the program on Thursdays 22:00~22:54 2005-04-xx to 2005-06-xx?
answer: SELECT starring_actors FROM table_18540104_1 WHERE time_frame = "Thursdays 22:00~22:54 2005-04-xx to 2005-06-xx"
context: CREATE TABLE table_18540104_1 (starring_actors VARCHAR, time_frame VARCHAR)