Question: who had a number one hit with moon river
[{'answer': 'Danny Williams', 'provenance': [{'wikipedia_id': '1604535', 'title': 'Danny Williams (singer)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1604535', 'title': 'Danny Williams (singer)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 305, 'bleu_score': 0.7176152464058531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 837177076107669456}, 'section': 'Section::::Abstract.'}]}]