Question: who sings lightning this is what you came for
[{'answer': 'Rihanna', 'provenance': [{'wikipedia_id': '50350844', 'title': 'This Is What You Came For', 'start_paragraph_id': 1, 'start_character': 133, 'end_paragraph_id': 1, 'end_character': 140, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '50350844', 'title': 'This Is What You Came For', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 677, 'bleu_score': 0.771208822540648, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1643927799903425136}, 'section': 'Section::::Abstract.'}]}]