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?]