CREATE TABLE table_name_93 (year INT, competition VARCHAR, venue VARCHAR)

Which Year has a Competition of olympic games, and a Venue of atlanta, united states?
SELECT AVG(year) FROM table_name_93 WHERE competition = "olympic games" AND venue = "atlanta, united states"
SELECT AVG("year") FROM "table_name_93" WHERE "atlanta, united states" = "venue" AND "competition" = "olympic games"