Question: who performed with beyonce at the super bowl
[{'answer': 'Kelly Rowland', 'provenance': [{'wikipedia_id': '38420494', 'title': 'Super Bowl XLVII halftime show', 'start_paragraph_id': 1, 'start_character': 201, 'end_paragraph_id': 1, 'end_character': 214, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Michelle Williams', 'provenance': [{'wikipedia_id': '38420494', 'title': 'Super Bowl XLVII halftime show', 'start_paragraph_id': 1, 'start_character': 219, 'end_paragraph_id': 1, 'end_character': 236, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '38420494', 'title': 'Super Bowl XLVII halftime show', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 832, 'bleu_score': 0.9851290761715561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6967943816345764031}, 'section': 'Section::::Abstract.'}]}]