user: Question: Who wears the jersey number 20 and has the position of SG?
Columns: ['Player', 'Nationality', 'Jersey Number(s)', 'Position', 'Years', 'From']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Steve Scheffler Category:Articles with hCards', 'United States', '55', 'C / PF', '1992 – 1997', 'Purdue']
SQL:

assistant: SELECT "Player" FROM "Table" WHERE "Position" = 'SG' AND "Jersey Number(s)" = '20';