Question: most popular form of christianity in united states
[{'answer': 'Baptist', 'provenance': [{'wikipedia_id': '11854761', 'title': 'Christianity in the United States', 'start_paragraph_id': 2, 'start_character': 444, 'end_paragraph_id': 2, 'end_character': 451, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]