Situation: Joan has said that he will be back for lunch. Ask him for confirmation.

Interpretation of the utterance: Confirmatory yes-no question

Informator: R. D.

Utterance: La femna t'a invitat, es sur que vengues?

Translation: My wife invited you, are you coming for sure?
[The woman you have(present, 3rd sing.) invited, be(present, 3rd sing.) sure that come(present, 2nd sing.)?]