Situation: You were talking about 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: J. S.

Utterance: Siriá pas la Maria, par azard?

Translation: Wouldn't it be Maria, by chance?
[Be(conditional, 3rd sing.) not the Maria, by chance?]