Question: how many branches of pizza hut in the world
[{'answer': 'over 16,000'}, {'provenance': [{'wikipedia_id': '37561', 'title': 'Pizza Hut', 'start_paragraph_id': 1, 'start_character': 108, 'end_paragraph_id': 1, 'end_character': 485, 'bleu_score': 0.6602669504230061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11282189230945925953}, 'section': 'Section::::Abstract.'}]}]