user: Question: Who directed the episode that had 1.48 million viewers in the U.S.?
Columns: ['No. in series', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'U.S. viewers (millions)']
Types: ['real', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: [1.0, '"Pilot"', 'Andy Cadiff', 'Chris Case', 'January19,2011', 101.0, '2.01']
SQL:

assistant: SELECT "Directed by" FROM "Table" WHERE "U.S. viewers (millions)" = '1.48';