Question: the commonly used standard length of hacksaw blade is
[{'answer': '12 inch', 'provenance': [{'wikipedia_id': '1067614', 'title': 'Hacksaw', 'start_paragraph_id': 12, 'start_character': 29, 'end_paragraph_id': 12, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::Design.:Blades.\n'}]}, {'provenance': [{'wikipedia_id': '1067614', 'title': 'Hacksaw', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 232, 'bleu_score': 0.81194391512924, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6060982383599749738}, 'section': 'Section::::Design.:Blades.\n'}]}]