Question: when was walk on the wild side written
[{'answer': '1972', 'provenance': [{'wikipedia_id': '1809016', 'title': 'Walk on the Wild Side (Lou Reed song)', 'start_paragraph_id': 1, 'start_character': 89, 'end_paragraph_id': 1, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1809016', 'title': 'Walk on the Wild Side (Lou Reed song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 555, 'bleu_score': 0.9290952763452941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13772750424277683423}, 'section': 'Section::::Abstract.'}]}]