Question: what does nha stand for in the medical field
[{'answer': 'National Healthcareer Association', 'provenance': [{'wikipedia_id': '19481431', 'title': 'National Healthcareer Association', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 33, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19481431', 'title': 'National Healthcareer Association', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 856, 'bleu_score': 0.7206181127955621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15266393735809440286}, 'section': 'Section::::Abstract.'}]}]