Table: puerperal_fever_mortality
Columns: month
births
deaths
rate
sort_restore

Question: What is the sort value that had deaths of 71?
SQL: SELECT "sort_restore" FROM puerperal_fever_mortality WHERE "deaths" = '71'

Question: Which month had a sort value under 39 and 2 deaths?
SQL: SELECT "month" FROM puerperal_fever_mortality WHERE "sort_restore" < 39 AND "deaths" = '2'

Question: What is the number of sort values associated with 389 births?
SQL: SELECT COUNT("sort_restore") FROM puerperal_fever_mortality WHERE "births" = '389'