Question: who sings at the end of this is america childish gambino
[{'answer': 'Young Thug', 'provenance': [{'wikipedia_id': '57350012', 'title': 'This Is America (song)', 'start_paragraph_id': 1, 'start_character': 350, 'end_paragraph_id': 1, 'end_character': 360, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '57350012', 'title': 'This Is America (song)', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 564, 'bleu_score': 0.978375183951072, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17466342479303436134}, 'section': 'Section::::Composition.\n'}]}]