user: Question: How long did the soap opera run in which Nadine Spruß acted in?
Columns: ['Actor', 'Character', 'Soap Opera', 'Years', 'Duration']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Andrea Spatzek', 'Gabi Zenker', 'Lindenstraße', '1985—', '29 years']
SQL:

assistant: SELECT "Character" FROM "Table" WHERE "Actor" = 'Nadine Spruß';