Question: who is playing halftime in the super bowl this year
[{'answer': 'Justin Timberlake', 'provenance': [{'wikipedia_id': '40148429', 'title': 'Super Bowl LII', 'start_paragraph_id': 4, 'start_character': 185, 'end_paragraph_id': 4, 'end_character': 202, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40148429', 'title': 'Super Bowl LII', 'start_paragraph_id': 65, 'start_character': 0, 'end_paragraph_id': 65, 'end_character': 305, 'bleu_score': 0.9603762111511761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12790356334679352858}, 'section': 'Section::::Entertainment.:Halftime show.\n'}]}]