vilken

Etymology
From, accusative of , from.

Determiner

 * 1) which (interrogative determiner)

Pronoun

 * 1) which, what, which one(s), who (plural), whom (plural) (interrogative pronoun)
 * 2) which, who (plural), whom (plural) (relative pronoun)
 * 1) which, who (plural), whom (plural) (relative pronoun)
 * 1) which, who (plural), whom (plural) (relative pronoun)
 * 1) which, who (plural), whom (plural) (relative pronoun)

Usage notes
In the singular, who/whom is as an interrogative pronoun or  as a relative pronoun.

Adjective

 * 1) what a, such (exclamatory adjective)