user: Question: What is the Cause of death of the Officer with a Date of death of 1956-09-07?
Columns: ['Rank', 'Badge/Serial Number', 'Tenure', 'Date of death', 'Cause of death']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['City Marshal', '—', '—', '1853', 'Gunfire']
SQL:

assistant: SELECT "Cause of death" FROM "Table" WHERE "Date of death" = '1956-09-07';