Question: who sang crazy in love for fifty shades of grey
[{'answer': 'Beyoncé', 'provenance': [{'wikipedia_id': '2256825', 'title': 'Crazy in Love', 'start_paragraph_id': 1, 'start_character': 45, 'end_paragraph_id': 1, 'end_character': 52, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2256825', 'title': 'Crazy in Love', 'start_paragraph_id': 47, 'start_character': 0, 'end_paragraph_id': 47, 'end_character': 787, 'bleu_score': 0.9680991184556271, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15829024550288753585}, 'section': 'Section::::Remixes.\n'}]}]