Question: which type of economy most often practices polygyny
[{'answer': 'rural areas with growing populations', 'provenance': [{'wikipedia_id': '24025', 'title': 'Polygyny', 'start_paragraph_id': 4, 'start_character': 259, 'end_paragraph_id': 4, 'end_character': 295, 'bleu_score': 1.0, 'section': 'Section::::Incidence.\n'}]}, {'provenance': [{'wikipedia_id': '24025', 'title': 'Polygyny', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 493, 'bleu_score': 0.9754554449993441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10905994545334875678}, 'section': 'Section::::Incidence.\n'}]}]