user: Question: What is the sum number of round with nebraska as the college and the overall greater than 40?
Columns: ['Round', 'Pick', 'Overall', 'Name', 'Position', 'College']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 3.0, 3.0, 'Jack Scarbath', 'QB', 'Maryland']
SQL:

assistant: SELECT SUM("Round") FROM "Table" WHERE "College" = 'nebraska' AND "Overall" > 40.0;