CREATE TABLE table_62347 ("Perpetrator" TEXT, "Location" TEXT, "Country" TEXT, "Killed" FLOAT, "Injured" TEXT)

What is the average number of people killed with a Perpetrator of wirjo, 42?
SELECT AVG("Killed") FROM table_62347 WHERE "Perpetrator" = 'wirjo, 42'
SELECT AVG("Killed") FROM "table_62347" WHERE "Perpetrator" = 'wirjo, 42'