user: Question: Tell me the School/Club team of the player from the United States that play'de Guard?
Columns: ['Player', 'Nationality', 'Position', 'Years for Jazz', 'School/Club Team']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Aleksandar Radojević', 'Serbia', 'Center', '2004-05', 'Barton College']
SQL:

assistant: SELECT "School/Club Team" FROM "Table" WHERE "Nationality" = 'United States' AND "Position" = 'Guard';