Question: in which history age was the use of stone started
[{'answer': 'The Stone Age', 'provenance': [{'wikipedia_id': '29219', 'title': 'Stone Age', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '29219', 'title': 'Stone Age', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 262, 'bleu_score': 0.9569637990759251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12909456574882141324}, 'section': 'Section::::Abstract.'}]}]