Who? whoever. Dual number or associative case. Also pronounced šíyin. šíin pawá ‘who are those two?’; ana šíin pawánpta úyit ‘whichever two will medicine sing first’; šíinpam tkʷátata ‘who are you going to eat with?’; šíin páq̓inušana ‘who saw him?’; ku šíin páwiyapɨnyawax̣ana ‘and someone would go out to him’.