CREATE TABLE table_69149 ("Rank" FLOAT, "Lane" FLOAT, "Name" TEXT, "Nationality" TEXT, "Time" FLOAT)

for the rank of 3 for the united states, what is the average lane?
SELECT AVG("Lane") FROM table_69149 WHERE "Nationality" = 'united states' AND "Rank" = '3'
SELECT AVG("Lane") FROM "table_69149" WHERE "Nationality" = 'united states' AND "Rank" = '3'