Question: when did jackie robinson won rookie of the year
[{'answer': '1947', 'provenance': [{'wikipedia_id': '16193', 'title': 'Jackie Robinson', 'start_paragraph_id': 1, 'start_character': 310, 'end_paragraph_id': 1, 'end_character': 314, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]