CREATE TABLE table_29572 ("Name/Name of Act" TEXT, "Age ( s ) " TEXT, "Genre" TEXT, "Act" TEXT, "Hometown" TEXT, "Qtr. Final  ( Week ) " FLOAT, "Semi Final  ( Week ) " TEXT, "Position Reached" TEXT)

What is the quarterfinal week for Austin Anderson?
SELECT MIN("Qtr. Final (Week)") FROM table_29572 WHERE "Name/Name of Act" = 'Austin Anderson'
SELECT MIN("Qtr. Final (Week)") FROM "table_29572" WHERE "Name/Name of Act" = 'Austin Anderson'