Question: What is the earliest quarterfinal week when the genre is dancing and the act is 32?
Schema: create table table_27529608_21 (qtr_final__week_ integer, genre varchar, age_s_ varchar, PRIMARY KEY (qtr_final__week_))
SQL: select min(qtr_final__week_) from table_27529608_21 where genre = "dancing" and age_s_ = "32"