user: Question: What is Gunfire victim Maria Cecilia Rosa with 6 years of Tenure Date of Death?
Columns: ['Name', 'Rank', 'Tenure', 'Date of death', 'Cause of death']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['James R. Barton', 'Sheriff', '—', '1857-01-23', 'Gunfire']
SQL:

assistant: SELECT "Date of death" FROM "Table" WHERE "Cause of death" = 'Gunfire' AND "Tenure" = '6 years' AND "Name" = 'Maria Cecilia Rosa';