Question: where does the yellow brick road lead to
[{'answer': 'Emerald City', 'provenance': [{'wikipedia_id': '169164', 'title': 'Yellow brick road', 'start_paragraph_id': 5, 'start_character': 169, 'end_paragraph_id': 5, 'end_character': 181, 'bleu_score': 1.0, 'section': "Section::::Road's history.\n"}]}]