user: Question: Which team has a 1990-91 number of 39 and a 1989-90 number of 34?
Columns: ['Team', 'Average', 'Points', 'Played', '1989-90', '1990-91', '1991-1992']
Types: ['text', 'real', 'real', 'real', 'text', 'text', 'real']
Sample row: ['River Plate', 1.342, 153.0, 114.0, '53', '45', 55.0]
SQL:

assistant: SELECT "Team" FROM "Table" WHERE "1990-91" = '39' AND "1989-90" = '34';