Table: mark_hanretty_2008_eu
Columns: event
season
compulsory_dance_cd
original_dance_od
free_dance_fd
combined_total_score

Question: What was the free dance score in the event where compulsory dance score was 15.99? 
SQL: SELECT "free_dance_fd" FROM mark_hanretty_2008_eu WHERE "compulsory_dance_cd" = '15.99'

Question: How many original dance scores are listed in the event where the compulsory dance was 20.03? 
SQL: SELECT COUNT("original_dance_od") FROM mark_hanretty_2008_eu WHERE "compulsory_dance_cd" = '20.03'

Question: In what even was the compulsory dance scored 23.75? 
SQL: SELECT "event" FROM mark_hanretty_2008_eu WHERE "compulsory_dance_cd" = '23.75'

Question: In what event was the compulsory dance score 28.12? 
SQL: SELECT "event" FROM mark_hanretty_2008_eu WHERE "compulsory_dance_cd" = '28.12'