CREATE TABLE table_name_98 (white_hat VARCHAR(255), ullrich VARCHAR(255), dakota_mission VARCHAR(255), deloria_ VARCHAR(255), _boas VARCHAR(255))
Dakota Mission of t, and a Deloria & Boas of tʽ, and a Ullrich of tȟ had what white hat?
    
SQL: SELECT white_hat FROM table_name_98 WHERE dakota_mission = "t" AND deloria_ & _boas = "tʽ" AND ullrich = "tȟ"