Situation: You were talking of Maria with someone and you hear somebody approaching. Ask your interlocutor if the person who is coming is Maria.

Interpretation of the utterance: Yes-No question with narrow focus and emphasis

Informator: C. J.

Utterance: Seriá pas la MARIA, qu'arriba?

Translation: Isn't it Maria, who is coming?
[Be(conditional, 3rd sing.) not the Maria, that arrives?]