Question: In what location were the fatalities Unknown for the Ju-52 aircraft?
SQL: SELECT "Location" FROM "2-1591561-1" WHERE "Fatalities" = 'Unknown' AND "Aircraft" = 'Ju-52';

Question: In what location was the tail number ZS-SPF?
SQL: SELECT "Location" FROM "2-1591561-1" WHERE "Tail number" = 'ZS-SPF';

Question: What was the location of the Ju-52 aircraft?
SQL: SELECT "Location" FROM "2-1591561-1" WHERE "Aircraft" = 'Ju-52';

Question: How many fatalities occurred for an Unknown tail number?
SQL: SELECT "Fatalities" FROM "2-1591561-1" WHERE "Tail number" = 'Unknown';

Question: What was the tail number with 3/3 fatalities?
SQL: SELECT "Tail number" FROM "2-1591561-1" WHERE "Fatalities" = '3/3';

Question: How many fatalities occurred for the Ju-52 aircraft?
SQL: SELECT "Fatalities" FROM "2-1591561-1" WHERE "Aircraft" = 'Ju-52';