Question: who is singing at the nba all star weekend
[{'answer': 'Fergie', 'provenance': [{'wikipedia_id': '49908604', 'title': '2018 NBA All-Star Game', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 6, 'bleu_score': 1.0, 'section': 'Section::::All-Star Game.:National anthem.\n'}]}, {'answer': 'Barenaked Ladies'}, {'answer': 'Kevin Hart'}, {'answer': 'Pharrell Williams'}, {'answer': 'N.E.R.D'}]