Table: tv_station_info_3
Columns: channel
video
aspect
psip_short_name
network

Question: Which network has more than 31.4 channels with a 4:3 aspect?
SQL: SELECT "network" FROM tv_station_info_3 WHERE "aspect" = '4:3' AND "channel" > 31.4

Question: Which video is on channel 31.2 with a 4:3 aspect?
SQL: SELECT "video" FROM tv_station_info_3 WHERE "aspect" = '4:3' AND "channel" = 31.2

Question: Which video has a 16:9 aspect?
SQL: SELECT "video" FROM tv_station_info_3 WHERE "aspect" = '16:9'