Question: emblem which united houses of york and lancaster
[{'answer': 'Tudor rose', 'provenance': [{'wikipedia_id': '1101508', 'title': 'Tudor rose', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1101508', 'title': 'Tudor rose', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 211, 'bleu_score': 0.9466178497997021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15103645292563223762}, 'section': 'Section::::Abstract.'}]}]