CREATE TABLE table_59939 ("Spaceport" CLOB, "Launch complex" CLOB, "Launcher" CLOB, "Spacecraft" CLOB, "Flights" CLOB, "Years" CLOB)

Which spacecraft were launched by the Titan II?
SELECT "Spacecraft" FROM table_59939 WHERE "Launcher" = 'titan ii'
SELECT "Spacecraft" FROM "table_59939" WHERE "Launcher" = 'titan ii'