Question: who was elected the first president of the nacw
[{'answer': 'Mrs. Mary Church Terrell', 'provenance': [{'wikipedia_id': '1188741', 'title': "National Association of Colored Women's Clubs", 'start_paragraph_id': 3, 'start_character': 1096, 'end_paragraph_id': 3, 'end_character': 1120, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]