user: Question: How many millions of U.S viewers watched the episode written by Liz Feldman? 
Columns: ['No. in series', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'U.S. viewers (million)']
Types: ['real', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: [1.0, '"Pilot"', 'Michael Lembeck', 'Suzanne Martin', 'June16,2010', 101.0, '4.75']
SQL:

assistant: SELECT "U.S. viewers (million)" FROM "Table" WHERE "Written by" = 'Liz Feldman';