user: Question: What is the director name is the U.S. viewers is 2.22 million?
Columns: ['Series #', 'Title', 'Directed by', 'Written by', 'Original air date', 'U.S. viewers (in millions)']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '"Pilot"', 'Steve Miner', 'Holly Sorensen', 'June22,2009', '2.50']
SQL:

assistant: SELECT "Directed by" FROM "Table" WHERE "U.S. viewers (in millions)" = '2.22';