user: Question: what is the team when sacks is 0 and the season is earlier than 1998?
Columns: ['Season', 'Team', 'League', 'Games', 'Total Tackles', 'Solo', 'TFL¹', 'Sacks', 'Int.']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1997.0, 'Baylor', 'Big 12', '8', '8', '6', '0', '0', '0']
SQL:

assistant: SELECT "Team" FROM "Table" WHERE "Sacks" = '0' AND "Season" < 1998.0;