Table: british_music_2004
Columns: position
song_title
artist
sales
highest_position

Question: What is the most sales by a song with a position higher than 3?
SQL: SELECT MAX("sales") FROM british_music_2004 WHERE "highest_position" > 3

Question: What were the sales for Dj Casper when he was in a position lower than 13?
SQL: SELECT "sales" FROM british_music_2004 WHERE "position" < 13 AND "artist" = 'dj casper'