user: Question: What are the Notes against a Silver for Jenny Johansson earlier than 2006?
Columns: ['Year', 'Gold', 'Silver', 'Bronze', 'Notes']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2000.0, 'Jenny Johansson', 'Simone Luder', 'Anna Górnicka-Antonowicz', 'Short distance']
SQL:

assistant: SELECT "Notes" FROM "Table" WHERE "Year" < 2006.0 AND "Silver" = 'Jenny Johansson';