Situation: You enter a store that you have never been in before and ask if they have tangerines.
Semantic interpretation: Neutral falling yes-no question. This intonational pattern tends to be used in communicative situations that require a pretty formal register, or when the interlocutor is unknown or deserves a specially respectful treatment.
Speaker: RS
Utterance: No és que pel cas teniu taronja?
Translation: Do you have tangerines by any chance?