Question: first black tennis player to win a grand slam
[{'answer': 'Althea Gibson', 'provenance': [{'wikipedia_id': '330436', 'title': 'Althea Gibson', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '330436', 'title': 'Althea Gibson', 'start_paragraph_id': 1, 'start_character': 14, 'end_paragraph_id': 1, 'end_character': 1054, 'bleu_score': 0.8698391786014941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15227269918367065405}, 'section': 'Section::::Abstract.'}]}]