CREATE TABLE table_name_98 (date VARCHAR2, class VARCHAR2, circuit VARCHAR2)

Which date was a GTS class on the Mosport International Raceway?
SELECT date FROM table_name_98 WHERE class = "gts" AND circuit = "mosport international raceway"
SELECT "date" FROM "table_name_98" WHERE "circuit" = "mosport international raceway" AND "class" = "gts"