Question: what is the most popular religion in united states
[{'answer': 'Christianity', 'provenance': [{'wikipedia_id': '532793', 'title': 'Religion in the United States', 'start_paragraph_id': 1, 'start_character': 46, 'end_paragraph_id': 1, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '532793', 'title': 'Religion in the United States', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 869, 'bleu_score': 0.9854535765681661, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3091476488936656012}, 'section': 'Section::::Abstract.'}]}]