user: Question: What is the Overall of the pick less than 20?
Columns: ['Round', 'Pick #', 'Overall', 'Name', 'Position', 'College']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 21.0, 21.0, 'Matt Jones', 'Wide Receiver', 'Arkansas']
SQL:

assistant: SELECT "Overall" FROM "Table" WHERE "Pick #" < 20.0;