Question: what are the two types of organ donors
[{'answer': 'living', 'provenance': [{'wikipedia_id': '167166', 'title': 'Organ transplantation', 'start_paragraph_id': 1, 'start_character': 520, 'end_paragraph_id': 1, 'end_character': 526, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'brain dead', 'provenance': [{'wikipedia_id': '167166', 'title': 'Organ transplantation', 'start_paragraph_id': 3, 'start_character': 28, 'end_paragraph_id': 3, 'end_character': 38, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '167166', 'title': 'Organ transplantation', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 769, 'bleu_score': 0.9770901276655791, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10767836328666646989}, 'section': 'Section::::Abstract.'}]}]