Question: what is meant by feed in lathe machine
[{'answer': 'feed per revolution', 'provenance': [{'wikipedia_id': '1527151', 'title': 'Speeds and feeds', 'start_paragraph_id': 77, 'start_character': 302, 'end_paragraph_id': 77, 'end_character': 321, 'bleu_score': 1.0, 'section': 'Section::::Feed rate.:Formula to determine feed rate.\n'}]}, {'provenance': [{'wikipedia_id': '1527151', 'title': 'Speeds and feeds', 'start_paragraph_id': 77, 'start_character': 0, 'end_paragraph_id': 77, 'end_character': 321, 'bleu_score': 0.9684940092844061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16417584983863893831}, 'section': 'Section::::Feed rate.:Formula to determine feed rate.\n'}]}]