user: Question: How many years did the team that has a Singles win-Loss of 4-9 and first played before 1999?
Columns: ['Player', 'Total Win-Loss', 'Singles Win-Loss', 'Doubles Win-Loss', 'No. of ties', 'First year played', 'Years Played']
Types: ['text', 'text', 'text', 'text', 'real', 'real', 'real']
Sample row: ['Olena Antypina', '4-3', '2-2', '2-1', 4.0, 2006.0, 1.0]
SQL:

assistant: SELECT "Years Played" FROM "Table" WHERE "Singles Win-Loss" = '4-9' AND "First year played" < 1999.0;