CREATE TABLE technician (Starting_Year VARCHAR2, Team VARCHAR2)

Show the starting years shared by technicians from team 'CLE' and 'CWS'.
SELECT Starting_Year FROM technician WHERE Team = "CLE" INTERSECT SELECT Starting_Year FROM technician WHERE Team = "CWS"
SELECT "Starting_Year" FROM "technician" WHERE "CLE" = "Team" INTERSECT SELECT "Starting_Year" FROM "technician" WHERE "CWS" = "Team"