CREATE TABLE table_66217 ("Round" CLOB, "Date" CLOB, "Opponent" CLOB, "Venue" CLOB, "Result" CLOB, "Attendance" FLOAT)

What round has 2-1 as the result, and A as the venue?
SELECT "Round" FROM table_66217 WHERE "Result" = '2-1' AND "Venue" = 'a'
SELECT "Round" FROM "table_66217" WHERE "Result" = '2-1' AND "Venue" = 'a'