Question: who is considered to be the first pope of the christian church
[{'answer': 'St Peter', 'provenance': [{'wikipedia_id': '61502', 'title': 'List of popes', 'start_paragraph_id': 1, 'start_character': 661, 'end_paragraph_id': 1, 'end_character': 669, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]