user: Question: What average deaths have 150 as the IMR, with a CDR greater than 40?
Columns: ['Periodo', 'Births', 'Deaths', 'Difference', 'CBR*', 'CDR*', 'IMR*', 'TFR*']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['1950–1955', 52.0, 24.0, 28.0, 480.0, 225.0, 185.0, 687.0]
SQL:

assistant: SELECT AVG("Deaths") FROM "Table" WHERE "IMR*" = 150.0 AND "CDR*" > 40.0;