Question: olmec colossal heads were created using this method of sculpting
[{'answer': 'direct percussion', 'provenance': [{'wikipedia_id': '35721801', 'title': 'Olmec colossal heads', 'start_paragraph_id': 18, 'start_character': 119, 'end_paragraph_id': 18, 'end_character': 136, 'bleu_score': 1.0, 'section': 'Section::::Manufacture.\n'}]}, {'answer': 'hammerstones', 'provenance': [{'wikipedia_id': '35721801', 'title': 'Olmec colossal heads', 'start_paragraph_id': 18, 'start_character': 251, 'end_paragraph_id': 18, 'end_character': 263, 'bleu_score': 1.0, 'section': 'Section::::Manufacture.\n'}]}, {'answer': 'Abrasives', 'provenance': [{'wikipedia_id': '35721801', 'title': 'Olmec colossal heads', 'start_paragraph_id': 18, 'start_character': 398, 'end_paragraph_id': 18, 'end_character': 407, 'bleu_score': 1.0, 'section': 'Section::::Manufacture.\n'}]}, {'provenance': [{'wikipedia_id': '35721801', 'title': 'Olmec colossal heads', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 1066, 'bleu_score': 0.974441441169383, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7702492975248447873}, 'section': 'Section::::Manufacture.\n'}]}]