"Who is a nice friend?" is an English equivalent of the French phrase Qui est un ami sympa? The pronunciation of the masculine singular phrase -- which includes the colloquial, conversational, informal diminutive for the feminine/masculine super-complimentary adjective sympathique ("enjoyable, friendly, good, kind, nice, pleasant, sympathetic") -- will be "kee eh-teh-na-mee seh-pa" or "kee eh eh-na-mee seh-pa" depending upon the speaker's birthplace.
Qui, vous? in French means "Who, you?" in English.
Qui, moi? in French means "Who, me?" in English.
Qui conduit? in French means "Who is driving?" in English.
Qui est...? in French is "Who is...?" in English.
Qui es-tu? in French means "Who are you?" in English.
Je suis qui? in French means "Who am I?" in English.
Qui ça? in French means "Who that?" literally and "Who are you talking about?" loosely in English.
Qui peut dire? in French means "Who can tell?" in English.
Qui je suis, moi? in French means "Who am I?" in English.
Qui est de Paris? in French is "Who is from Paris?" in English.
C'est qui ton père? in French is "Who is your father?" in English.
Paris qui danse in French means "Paris which is dancing" in English.