Question: who is the executive director of alpha kappa alpha
[{'answer': 'Dorothy Buckhanan Wilson'}, {'provenance': [{'wikipedia_id': '1594608', 'title': 'Alpha Kappa Alpha', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 227, 'bleu_score': 0.7330574947600481, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 133145960067700902}, 'section': 'Section::::Abstract.'}]}]