Question: the printmaking technique that uses acid to cut the lines of the image is called
[{'answer': 'aquatint', 'provenance': [{'wikipedia_id': '42532', 'title': 'Printmaking', 'start_paragraph_id': 24, 'start_character': 87, 'end_paragraph_id': 24, 'end_character': 95, 'bleu_score': 1.0, 'section': 'Section::::Techniques.:Etching.\n'}]}, {'provenance': [{'wikipedia_id': '42532', 'title': 'Printmaking', 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 639, 'bleu_score': 0.9828310228624961, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18415566115548558660}, 'section': 'Section::::Techniques.:Aquatint.\n'}]}]