Question: How many U.S. viewers, in millions, watched the episode that aired on November 13, 2007?
Schema: create table table_13301516_1 (us_viewers__millions_ varchar, original_air_date varchar, PRIMARY KEY (us_viewers__millions_))
SQL: select us_viewers__millions_ from table_13301516_1 where original_air_date = "november 13, 2007"