Question: the percentage of carbon in high speed steel is
[{'answer': '2 %', 'provenance': [{'wikipedia_id': '685784', 'title': 'High-speed steel', 'start_paragraph_id': 4, 'start_character': 147, 'end_paragraph_id': 4, 'end_character': 156, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '685784', 'title': 'High-speed steel', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 456, 'bleu_score': 0.900541666720939, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13282508939432868456}, 'section': 'Section::::History.\n'}]}]