CREATE TABLE table_41232 ("Location" CLOB, "Aircraft" CLOB, "Tail number" CLOB, "Aircraft damage" CLOB, "Fatalities" CLOB)

How many fatalities occurred for an unknown tail number?
SELECT "Fatalities" FROM table_41232 WHERE "Tail number" = 'unknown'
SELECT "Fatalities" FROM "table_41232" WHERE "Tail number" = 'unknown'