Question: who are the heirs to the british throne
[{'answer': 'Charles , Prince of Wales', 'provenance': [{'wikipedia_id': '879986', 'title': 'Succession to the British throne', 'start_paragraph_id': 2, 'start_character': 78, 'end_paragraph_id': 2, 'end_character': 103, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Prince George', 'provenance': [{'wikipedia_id': '879986', 'title': 'Succession to the British throne', 'start_paragraph_id': 2, 'start_character': 215, 'end_paragraph_id': 2, 'end_character': 228, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Prince Henry', 'provenance': [{'wikipedia_id': '879986', 'title': 'Succession to the British throne', 'start_paragraph_id': 39, 'start_character': 13, 'end_paragraph_id': 39, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Current line of succession.\n'}]}, {'answer': 'Prince Andrew , Duke of York'}, {'answer': 'Prince William , Duke of Cambridge'}]