Question: which is more expensive upper west side or upper east side
[{'answer': 'Upper West Side', 'provenance': [{'wikipedia_id': '327244', 'title': 'Upper West Side', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '327244', 'title': 'Upper West Side', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 549, 'bleu_score': 0.8771858367953951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3807556199517954847}, 'section': 'Section::::Abstract.'}]}]