어느 것 /ʌnɯɡʌt/ Determiner

English: which
Deutsch: welcher/welche/welches (determiner); was (pronoun)

Example

당신은 [어느] 책을 읽고 있습니까?
Which book are you reading?
'어떤' 대신 '어느'를 써서 선택의 폭을 좁힙니다.