Table: luke_adams_race_walk
Columns: year
competition
venue
position
notes

Question: How many years have had the position of 2nd?
SQL: SELECT COUNT("year") FROM luke_adams_race_walk WHERE "position" = '2nd'

Question: What position had notes of 20km and a year earlier than 2002?
SQL: SELECT "position" FROM luke_adams_race_walk WHERE "notes" = '20km' AND "year" < 2002

Question: What was the venue before 2006, with the position of 10th?
SQL: SELECT "venue" FROM luke_adams_race_walk WHERE "year" < 2006 AND "position" = '10th'

Question: What were the notes when the Venue was Turin, Italy?
SQL: SELECT "notes" FROM luke_adams_race_walk WHERE "venue" = 'turin, italy'