CREATE TABLE table_12032 ("Race" CLOB, "Length" CLOB, "Class" CLOB, "Circuit" CLOB, "Date" CLOB)

Which date was a GTS class on the Mosport International Raceway?
SELECT "Date" FROM table_12032 WHERE "Class" = 'gts' AND "Circuit" = 'mosport international raceway'
SELECT "Date" FROM "table_12032" WHERE "Circuit" = 'mosport international raceway' AND "Class" = 'gts'