Question: what is the nqf level of a national diploma
[{'answer': 'principles and guidelines', 'provenance': [{'wikipedia_id': '12577637', 'title': 'South African Qualifications Authority', 'start_paragraph_id': 5, 'start_character': 20, 'end_paragraph_id': 5, 'end_character': 45, 'bleu_score': 1.0, 'section': 'Section::::The National Qualifications Framework.\n'}]}, {'provenance': [{'wikipedia_id': '12577637', 'title': 'South African Qualifications Authority', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 237, 'bleu_score': 0.943604326170661, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13238804428608745274}, 'section': 'Section::::The National Qualifications Framework.\n'}]}]