CREATE TABLE table_16668 ("Round" FLOAT, "Grand Prix" CLOB, "Date" CLOB, "Location" CLOB, "Pole Position" CLOB, "Fastest Lap" CLOB, "Winning Driver" CLOB, "Winning Constructor" CLOB, "Report" CLOB)

What is the location of thierry boutsen?
SELECT "Location" FROM table_16668 WHERE "Fastest Lap" = 'Thierry Boutsen'
SELECT "Location" FROM "table_16668" WHERE "Fastest Lap" = 'Thierry Boutsen'