Question: when did jackie robinson became rookie of the year
[{'answer': 'in 1947', 'provenance': [{'wikipedia_id': '16193', 'title': 'Jackie Robinson', 'start_paragraph_id': 2, 'start_character': 56, 'end_paragraph_id': 2, 'end_character': 63, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '16193', 'title': 'Jackie Robinson', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 329, 'bleu_score': 0.7287306738893841, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12331292836325106573}, 'section': 'Section::::Abstract.'}]}]