Question: When the value of "since beginning of big 12" is synonymous with its' category, what are the in Ames values?
Schema: create table table_10429820_13 (in_ames varchar, PRIMARY KEY (in_ames))
SQL: select in_ames from table_10429820_13 where "since_beginning_of_big_12" = "since_beginning_of_big_12"