CREATE TABLE table_28418 ("No." FLOAT, "#" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "U.S. viewers  ( million ) " CLOB, "Rank  ( week ) " CLOB, "Original air date" CLOB, "Production code" CLOB)

What was the ranking of episode #19?
SELECT "Rank (week)" FROM table_28418 WHERE "#" = '19'
SELECT "Rank (week)" FROM "table_28418" WHERE "#" = '19'