user: Question: Which year has a Gen.-Secretary of Silvana Jansen?
Columns: ['Year', 'President', 'Vice President', 'Gen.-Secretary', 'Treasurer']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['2013-2014', 'Oskar Salmhofer', 'Stephanie Moyaert', 'Marta Tomczyk', 'Tim Kowalke']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "Gen.-Secretary" = 'Silvana Jansen';