CREATE TABLE table_name_56 (play_by_play VARCHAR, year VARCHAR, network VARCHAR)

Who did the play-by-play before 1998 on Fox network?
SELECT play_by_play FROM table_name_56 WHERE year < 1998 AND network = "fox"
SELECT "play_by_play" FROM "table_name_56" WHERE "fox" = "network" AND "year" < 1998