user: Question: What is Winner, when Year is 2013?
Columns: ['Year', 'Tournament', 'Surface', 'Round', 'Winner', 'Score']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [2005.0, 'Miami', 'Hard', '4R', 'Ivanovic', '6–3, 3–6, 7–5']
SQL:

assistant: SELECT "Winner" FROM "Table" WHERE "Year" = 2013.0;