user: Question: Who wrote an episode watched by 19.01 million US viewers?
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'U.S. viewers (millions)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [73.0, 1.0, '"From the Grave"', 'Karen Gaviola', 'Ann Donahue & Elizabeth Devine', 'September19,2005', '19.21']
SQL:

assistant: SELECT "Written by" FROM "Table" WHERE "U.S. viewers (millions)" = '19.01';