Question: which phase of demographic transition is characterized by high birth and death rates
[{'answer': 'stage one', 'provenance': [{'wikipedia_id': '231079', 'title': 'Demographic transition', 'start_paragraph_id': 15, 'start_character': 432, 'end_paragraph_id': 15, 'end_character': 441, 'bleu_score': 1.0, 'section': 'Section::::Stage one.\n'}]}, {'provenance': [{'wikipedia_id': '231079', 'title': 'Demographic transition', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 689, 'bleu_score': 0.9583546176158331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6148351558881376431}, 'section': 'Section::::Summary of the theory.\n'}]}]