user: Question: What is the average round at which is the position of Tight end and Randy Bethel?
Columns: ['Round', 'Pick', 'Player', 'Position', 'School/Club Team']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 11.0, 'Pat Harlow', 'Offensive tackle', 'Southern California']
SQL:

assistant: SELECT AVG("Round") FROM "Table" WHERE "Position" = 'Tight end' AND "Player" = 'Randy Bethel';