Question: what is the art of drawing or painting on stone called
[{'answer': 'pictographs', 'provenance': [{'wikipedia_id': '928469', 'title': 'Rock art', 'start_paragraph_id': 1, 'start_character': 485, 'end_paragraph_id': 1, 'end_character': 496, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '928469', 'title': 'Rock art', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 797, 'bleu_score': 0.984062469849008, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13970808746747030693}, 'section': 'Section::::Abstract.'}]}]