Question: who won the 2016 costa book of the year
[{'answer': 'Sebastian Barry', 'provenance': [{'wikipedia_id': '56200182', 'title': '2016 Costa Book Awards', 'start_paragraph_id': 3, 'start_character': 42, 'end_paragraph_id': 3, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::Book of the Year.\n'}]}, {'provenance': [{'wikipedia_id': '56200182', 'title': '2016 Costa Book Awards', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 57, 'bleu_score': 0.570674577705599, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17440875219606384168}, 'section': 'Section::::Book of the Year.\n'}]}]