知る（しる）— find out; learn
誰 が 知る？
Who will find out?
知るしる
find out; learn
しる
accent [0]In detail
Words
誰darewho
がga(subject marker)
知るshirufind out
Kanji
知チ・
知る refers to coming to know something. To say someone already knows, Japanese normally uses 知っている. This plain-form question can ask who will find out.
Coco-sensei