CREATE TABLE table_55140 ("Title" CLOB, "Publisher" CLOB, "First Year" CLOB, "Last Year" CLOB, "Genre" CLOB)

When did the DC Comics title that debuted in 1937 end?
SELECT "Last Year" FROM table_55140 WHERE "First Year" = '1937' AND "Publisher" = 'dc comics'
SELECT "Last Year" FROM "table_55140" WHERE "First Year" = '1937' AND "Publisher" = 'dc comics'