Table: tvn24_schedule
Columns: weekdays
5_55
10_00
15_00
16_00
17_30
18_00
19_15
19_26
20_00
20_30
21_00
21_30
22_00
23_00

Question: What show comes on at 21:00 when Dot Above I comes on at 20:00?
SQL: SELECT "21_00" FROM tvn24_schedule WHERE "20_00" = 'dot above i'