Question: where have most fossils of australopithecus been found
[{'answer': 'South Africa', 'provenance': [{'wikipedia_id': '61534', 'title': 'Australopithecus', 'start_paragraph_id': 34, 'start_character': 301, 'end_paragraph_id': 34, 'end_character': 313, 'bleu_score': 1.0, 'section': 'Section::::Diet.\n'}]}, {'provenance': [{'wikipedia_id': '61534', 'title': 'Australopithecus', 'start_paragraph_id': 43, 'start_character': 0, 'end_paragraph_id': 43, 'end_character': 570, 'bleu_score': 0.930573633705965, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6089325307569779934}, 'section': 'Section::::History of study.\n'}]}]