Question: which became the dominant religion of all of europe
[{'answer': 'Christianity', 'provenance': [{'wikipedia_id': '4163014', 'title': 'Religion in Europe', 'start_paragraph_id': 1, 'start_character': 134, 'end_paragraph_id': 1, 'end_character': 146, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4163014', 'title': 'Religion in Europe', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 593, 'bleu_score': 0.899549596228653, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8347493880665720830}, 'section': 'Section::::Abstract.'}]}]