Question: who was the first african american to play in the major leagues
[{'answer': 'Jackie Robinson', 'provenance': [{'wikipedia_id': '1073579', 'title': 'List of first black Major League Baseball players', 'start_paragraph_id': 4, 'start_character': 89, 'end_paragraph_id': 4, 'end_character': 104, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]