Question: what is the cutting speed for mild steel
[{'answer': '100 ft / min'}, {'provenance': [{'wikipedia_id': '1527151', 'title': 'Speeds and feeds', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 433, 'bleu_score': 0.9748377259086851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1494902620546110847}, 'section': 'Section::::Cutting speed.\n'}]}]