CREATE TABLE table_64684 ("Time" CLOB, "Home team" CLOB, "Score" CLOB, "Away team" CLOB, "Venue" CLOB)

Who was the home team in the match that had an away team of Convoy Sun Hei Team B?
SELECT "Home team" FROM table_64684 WHERE "Away team" = 'convoy sun hei team b'
SELECT "Home team" FROM "table_64684" WHERE "Away team" = 'convoy sun hei team b'