Question: who performed the first successful heart transplant in australia
[{'answer': 'Dr Victor Chang', 'provenance': [{'wikipedia_id': '9603308', 'title': 'Fiona Coote', 'start_paragraph_id': 5, 'start_character': 77, 'end_paragraph_id': 5, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Heart transplant.\n'}]}, {'provenance': [{'wikipedia_id': '9603308', 'title': 'Fiona Coote', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 413, 'bleu_score': 0.9694566079002921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1619046809919071102}, 'section': 'Section::::Heart transplant.\n'}]}]