Question: who sings let there be peace on earth world of color
[{'answer': 'The Nashville Choir', 'provenance': [{'wikipedia_id': '12775381', 'title': 'World of Color', 'start_paragraph_id': 13, 'start_character': 242, 'end_paragraph_id': 13, 'end_character': 261, 'bleu_score': 1.0, 'section': 'Section::::Synopsis.:"World of Color".\n'}]}, {'provenance': [{'wikipedia_id': '12775381', 'title': 'World of Color', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 261, 'bleu_score': 0.950578622812921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13897811636637912802}, 'section': 'Section::::Synopsis.:"World of Color".\n'}]}]