CREATE TABLE table_name_53 (play_by_play VARCHAR2, network VARCHAR2, year VARCHAR2)

Who did the play-by-play on the CBC network before 1961?
SELECT play_by_play FROM table_name_53 WHERE network = "cbc" AND year < 1961
SELECT "play_by_play" FROM "table_name_53" WHERE "cbc" = "network" AND "year" < 1961