user: Question: What was the lowest round for a Tight End position?
Columns: ['Round', 'Pick', 'Name', 'Position', 'College']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [4.0, '5 (104)', 'Beau Bell', 'Linebacker', 'UNLV']
SQL:

assistant: SELECT MIN("Round") FROM "Table" WHERE "Position" = 'Tight End';