Word/Phrase: whose are they
Translation: de quién son
Pronunciation: de ˈkjen son
Who are they? - ¿De quién son?
I wonder whose are they. - Me pregunto de quién son.
Whose are they in the picture? - ¿De quién son en la foto?
I asked whose are they. - Pregunté de quién son.
Whose are they supposed to be? - ¿De quién se supone que son?