user: Question: Who was the visiting team when the leading scorer was Jones : 20?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Leading scorer', 'Attendance', 'Record', 'Streak']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['April 2', 'Portland Trail Blazers', 'L 91–104', 'Los Angeles Lakers', 'Bryant : 36', 'Staples Center 18,997', '38–37', 'L3']
SQL:

assistant: SELECT "Visitor" FROM "Table" WHERE "Leading scorer" = 'Jones : 20';