Situation: At two o'clock in the morning, you are asleep in your bed, and you hear someone knocking at the door. Ask yourself who the hell it could be at that early hour.

Interpretation of the utterance: Dubitative Wh-question

Informator: A. D.

Utterance: Qui es-quò que tapa, a 'quela ora 'quí?

Translation: Who is knocking at this time?
[Who is-it that knock(present, 3rd sing.), at that time here?]