user: Question: On what Date was the Attendance larger than 14427 and a Loss of Jon Lieber (4–1)?
Columns: ['Date', 'Opponent', 'Score', 'Loss', 'Save', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['April 4', 'Nationals', '8–4', 'Liván Hernández (0–1)', 'None', 44080.0, '1–0']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Attendance" > 14427.0 AND "Loss" = 'Jon Lieber (4–1)';