Question: what is the highest color belt in jiu jitsu
[{'answer': 'red', 'provenance': [{'wikipedia_id': '25061050', 'title': 'Brazilian jiu-jitsu ranking system', 'start_paragraph_id': 1, 'start_character': 185, 'end_paragraph_id': 1, 'end_character': 188, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25061050', 'title': 'Brazilian jiu-jitsu ranking system', 'start_paragraph_id': 28, 'start_character': 0, 'end_paragraph_id': 28, 'end_character': 616, 'bleu_score': 0.946243648101975, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3217932600399008490}, 'section': 'Section::::Adult belt ranks.:Red belt.\n'}]}]