Question: in america which racial group has the highest infant morality rate
[{'answer': 'African - American', 'provenance': [{'wikipedia_id': '71617', 'title': 'Infant mortality', 'start_paragraph_id': 121, 'start_character': 108, 'end_paragraph_id': 121, 'end_character': 132, 'bleu_score': 1.0, 'section': 'Section::::Epidemiology.:United States.\n'}]}, {'provenance': [{'wikipedia_id': '71617', 'title': 'Infant mortality', 'start_paragraph_id': 121, 'start_character': 0, 'end_paragraph_id': 121, 'end_character': 424, 'bleu_score': 0.9060450046726841, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11297405542143391414}, 'section': 'Section::::Epidemiology.:United States.\n'}]}]