user: Question: What is the number of appearances where the most recent final result is 1999, beat Genk 3-1?
Columns: ['Team', '# appearances', 'years (won in bold)', '# wins', '# runner-up', 'Most recent final']
Types: ['text', 'real', 'text', 'real', 'real', 'text']
Sample row: ['Standard Liège', 7.0, '1981, 1982, 1983, 1993, 2008 , 2009 , 2011', 4.0, 3.0, '2011 , lost to Genk 1-0']
SQL:

assistant: SELECT "# appearances" FROM "Table" WHERE "Most recent final" = '1999, beat Genk 3-1';