CREATE TABLE table_67710 ("Date" CLOB, "Home captain" CLOB, "Away captain" CLOB, "Venue" CLOB, "Result" CLOB)

Who was the away captain for matches played at Trent Bridge?
SELECT "Away captain" FROM table_67710 WHERE "Venue" = 'trent bridge'
SELECT "Away captain" FROM "table_67710" WHERE "Venue" = 'trent bridge'