Question: what is the largest religious group in the united states
[{'answer': 'Christians', 'provenance': [{'wikipedia_id': '532793', 'title': 'Religion in the United States', 'start_paragraph_id': 2, 'start_character': 889, 'end_paragraph_id': 2, 'end_character': 899, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]