CREATE TABLE table_30500 ("No." FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "U.S. viewers  ( million ) " CLOB, "Original air date" CLOB, "Production code" FLOAT)

how many millions of north american viewers had the episode called 'smother'?
SELECT "U.S. viewers (million)" FROM table_30500 WHERE "Title" = 'Smother'
SELECT "U.S. viewers (million)" FROM "table_30500" WHERE "Title" = 'Smother'