Question: who sang it's a wonderful world first
[{'answer': 'Louis Armstrong', 'provenance': [{'wikipedia_id': '1273025', 'title': 'What a Wonderful World', 'start_paragraph_id': 1, 'start_character': 134, 'end_paragraph_id': 1, 'end_character': 149, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1273025', 'title': 'What a Wonderful World', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 535, 'bleu_score': 0.9788329837059241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1061237409560766631}, 'section': 'Section::::Abstract.'}]}]