CREATE TABLE table_71524 ("Year" CLOB, "Start" CLOB, "Qual" CLOB, "Rank" CLOB, "Finish" CLOB, "Laps" FLOAT)

What was Tony Bettenhausen's qualifying time in 1947?
SELECT "Qual" FROM table_71524 WHERE "Year" = '1947'
SELECT "Qual" FROM "table_71524" WHERE "Year" = '1947'