user: Question: What is the previous team of the player with 4 NBA years and a pick less than 16?
Columns: ['Pick', 'Pos.', 'Nationality', 'Team', 'Previous team', 'NBA years [a ]', 'Career with the franchise [b ]']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'C', 'United States', 'Miami Heat', 'Dallas Mavericks', '1', '— [c ]']
SQL:

assistant: SELECT "Previous team" FROM "Table" WHERE "NBA years [a ]" = '4' AND "Pick" < 16.0;