user: Question: What is the average round of the defensive back player with a pick # greater than 5 and an overall less than 152?
Columns: ['Round', 'Pick #', 'Overall', 'Name', 'Position', 'College']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 2.0, 2.0, 'Bill Fralic', 'Guard', 'Pittsburgh']
SQL:

assistant: SELECT AVG("Round") FROM "Table" WHERE "Pick #" > 5.0 AND "Position" = 'defensive back' AND "Overall" < 152.0;