Question: who do all the swans in england belong to
[{'answer': 'the British Crown', 'provenance': [{'wikipedia_id': '397172', 'title': 'Swan Upping', 'start_paragraph_id': 3, 'start_character': 22, 'end_paragraph_id': 3, 'end_character': 39, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '397172', 'title': 'Swan Upping', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 546, 'bleu_score': 0.979054689945215, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1458301666799315252}, 'section': 'Section::::History.\n'}]}]