CREATE TABLE table_21067 ("Match" FLOAT, "Date" CLOB, "Opponent" CLOB, "Venue" CLOB, "Result" CLOB, "Turbine goals" CLOB, "Attendance" FLOAT, "Report" CLOB)

Name the opponent for 12 may 2008
SELECT "Opponent" FROM table_21067 WHERE "Date" = '12 May 2008'
SELECT "Opponent" FROM "table_21067" WHERE "Date" = '12 May 2008'