Question: who made the album to pimp a butterfly
[{'answer': 'American rapper Kendrick Lamar', 'provenance': [{'wikipedia_id': '45600219', 'title': 'To Pimp a Butterfly', 'start_paragraph_id': 1, 'start_character': 49, 'end_paragraph_id': 1, 'end_character': 79, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '45600219', 'title': 'To Pimp a Butterfly', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 585, 'bleu_score': 0.684189494342616, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8257064159316064984}, 'section': 'Section::::Abstract.'}]}]