Table: anke_feller_1997_world
Columns: year
tournament
venue
result
extra

Question: What is the lowest year that has athens, greece as the venue?
SQL: SELECT MIN("year") FROM anke_feller_1997_world WHERE "venue" = 'athens, greece'

Question: Which venue has 1st as the result?
SQL: SELECT "venue" FROM anke_feller_1997_world WHERE "result" = '1st'

Question: What extra has world championships as the tournament, and 1st as the result?
SQL: SELECT "extra" FROM anke_feller_1997_world WHERE "tournament" = 'world championships' AND "result" = '1st'