Question: what is the most practiced religion in south korea
[{'answer': 'Protestantism', 'provenance': [{'wikipedia_id': '23747240', 'title': 'Religion in South Korea', 'start_paragraph_id': 1, 'start_character': 227, 'end_paragraph_id': 1, 'end_character': 240, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23747240', 'title': 'Religion in South Korea', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 505, 'bleu_score': 0.7687233133932241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16940446510447103844}, 'section': 'Section::::Abstract.'}]}]