Question: who was the nba rookie of the year last year
[{'answer': 'Malcolm Brogdon', 'provenance': [{'wikipedia_id': '631964', 'title': 'NBA Rookie of the Year Award', 'start_paragraph_id': 3, 'start_character': 176, 'end_paragraph_id': 3, 'end_character': 191, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]