Table: anita_wlodarczyk_jumps
Columns: year
competition
venue
position
notes

Question: Which Notes have a Competition of world championships, and a Position of 2nd?
SQL: SELECT "notes" FROM anita_wlodarczyk_jumps WHERE "competition" = 'world championships' AND "position" = '2nd'

Question: What was the venue after 2012?
SQL: SELECT "venue" FROM anita_wlodarczyk_jumps WHERE "year" > 2012

Question: What were the notes in 2011?
SQL: SELECT "notes" FROM anita_wlodarczyk_jumps WHERE "year" = 2011

Question: Which Year has a Position of 9th?
SQL: SELECT AVG("year") FROM anita_wlodarczyk_jumps WHERE "position" = '9th'