CREATE TABLE table_52893 ("Runner" TEXT, "Country" TEXT, "5K Wins" FLOAT, "10K Wins" FLOAT, "Total" FLOAT)

What is the average 10K wins the United States, which had 0 5K wins, have?
SELECT AVG("10K Wins") FROM table_52893 WHERE "Country" = 'united states' AND "5K Wins" = '0'
SELECT AVG("10K Wins") FROM "table_52893" WHERE "5K Wins" = '0' AND "Country" = 'united states'