Question: who produced let the beat build lil wayne
[{'answer': 'West', 'provenance': [{'wikipedia_id': '5001372', 'title': 'Tha Carter III', 'start_paragraph_id': 3, 'start_character': 461, 'end_paragraph_id': 3, 'end_character': 465, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Deezle', 'provenance': [{'wikipedia_id': '5001372', 'title': 'Tha Carter III', 'start_paragraph_id': 5, 'start_character': 73, 'end_paragraph_id': 5, 'end_character': 79, 'bleu_score': 1.0, 'section': 'Section::::Background and recording.\n'}]}]