user: ### NOW ANSWER:
Question: What is the pick number for the player playing tackle position, and a round less than 15?
Columns: ['Round', 'Pick', 'Player', 'Position', 'School/Club Team']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [2.0, 46.0, 'Eugene Epps', 'Defensive Back', 'Texas-El Paso']
SQL:

assistant: SELECT SUM("Pick") FROM "Table" WHERE "Position" = 'tackle' AND "Round" < 15.0;