CREATE TABLE table_29122 ("No." FLOAT, "#" FLOAT, "Title" CLOB, "Directed by" CLOB, "Story by" CLOB, "Teleplay by" CLOB, "Original air date" CLOB, "U.S. viewers  ( millions ) " CLOB)

How many viewers watched the episode with a story by david simon & mari kornhauser?
SELECT "U.S. viewers (millions)" FROM table_29122 WHERE "Story by" = 'David Simon & Mari Kornhauser'
SELECT "U.S. viewers (millions)" FROM "table_29122" WHERE "Story by" = 'David Simon & Mari Kornhauser'