Question: what does a braden score of 20 mean
[{'answer': 'No Risk', 'provenance': [{'wikipedia_id': '30932131', 'title': 'Braden Scale for Predicting Pressure Ulcer Risk', 'start_paragraph_id': 17, 'start_character': 286, 'end_paragraph_id': 17, 'end_character': 293, 'bleu_score': 1.0, 'section': 'Section::::Scoring with the Braden Scale.\n'}]}]