Table: canadian_tv_schedule_1998
Columns: 7_00
7_30
8_00
8_30
9_00
9_30
10_00
10_30

Question: What is on the at 8:00 on the same channel that has Costello on at 8:30?
SQL: SELECT "8_00" FROM canadian_tv_schedule_1998 WHERE "8_30" = 'costello'

Question: What is on at 7:30 on the same channel as Wheel of Fortune at 7:00?
SQL: SELECT "7_30" FROM canadian_tv_schedule_1998 WHERE "7_00" = 'wheel of fortune'

Question: What is on at 8:00 on the same change as W-Five at 10:00?
SQL: SELECT "8_00" FROM canadian_tv_schedule_1998 WHERE "10_00" = 'w-five'

Question: What is on at 9:30 on the same channel as Fin du Monde at 10:00?
SQL: SELECT "9_30" FROM canadian_tv_schedule_1998 WHERE "10_00" = 'fin du monde'

Question: What is on at 8:30 on the same channel as Les Machos at 9:00?
SQL: SELECT "8_30" FROM canadian_tv_schedule_1998 WHERE "9_00" = 'les machos'