user: Question: After 1999, who played Men's Doubles when Kasper Ipsen played Men's Singles?
Columns: ['Year', "Men's singles", "Women's singles", "Men's doubles", "Women's doubles", 'Mixed doubles']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1987.0, 'Peter Axelsson', 'Nina Sundberg', 'Peter Axelsson Stefan Axelsson', 'Nina Sundberg Ulrica von Pfaler', 'Peter Axelsson Elrica von Pfaler']
SQL:

assistant: SELECT "Men's doubles" FROM "Table" WHERE "Year" > 1999.0 AND "Men's singles" = 'Kasper Ipsen';