Question: who wrote the song love on the brain for rihanna
[{'answer': 'Fred Ball', 'provenance': [{'wikipedia_id': '48210092', 'title': 'Love on the Brain', 'start_paragraph_id': 1, 'start_character': 148, 'end_paragraph_id': 1, 'end_character': 157, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Joseph Angel', 'provenance': [{'wikipedia_id': '48210092', 'title': 'Love on the Brain', 'start_paragraph_id': 1, 'start_character': 119, 'end_paragraph_id': 1, 'end_character': 131, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Rihanna', 'provenance': [{'wikipedia_id': '48210092', 'title': 'Love on the Brain', 'start_paragraph_id': 1, 'start_character': 49, 'end_paragraph_id': 1, 'end_character': 56, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '48210092', 'title': 'Love on the Brain', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 702, 'bleu_score': 0.8964767234852591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17397799957888350282}, 'section': 'Section::::Abstract.'}]}]