user: Question: What is the overall sum of round 3?
Columns: ['Round', 'Pick', 'Overall', 'Name', 'Position', 'College']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 4.0, 4.0, 'Richie Lucas', 'QB', 'Penn State']
SQL:

assistant: SELECT SUM("Overall") FROM "Table" WHERE "Round" = 3.0;