Question: who was named as a sports person of the year 2018
[{'answer': 'Roger Federer', 'provenance': [{'wikipedia_id': '5233198', 'title': 'Laureus World Sports Award for Sportsman of the Year', 'start_paragraph_id': 2, 'start_character': 972, 'end_paragraph_id': 2, 'end_character': 985, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5233198', 'title': 'Laureus World Sports Award for Sportsman of the Year', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 1096, 'bleu_score': 0.9437225565873111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13062468844650523875}, 'section': 'Section::::Abstract.'}]}]