Question: Which of these two pizzerias has had the same owners for longer, Regina Pizzeria or Pietro's Pizza?
Sentence (from "Tutta Bella Neapolitan Pizzeria"): The restaurant specializes in "authentic" Neapolitan pizza and is certified by the non-profit Associaziona Verace Pizza Napoletana ("True Neapolitan Pizza Association") which certifies pizzerias that use traditional ingredients and processes.
Relevant evidence: No