[{'role': 'system', 'content': "You are an expert in machine learning and your task is to classify code snippets into one of the following categories: ['helper_functions', 'load_data', 'data_exploration', 'data_preprocessing', 'evaluation', 'modelling', 'prediction', 'result_visualization', 'save_results', 'comment_only']."}, {'role': 'user', 'content': "Identify the single most appropriate category to which the provided code belongs. Provide your response as a single category label without any additional information, commentary, or personal opinions.\\nPython Code:bill_gates = {'bedrooms':[8],\n'bathrooms':[25],\n'sqft_living':[50000],\n'sqft_lot':[225000],\n'floors':[4],\n'zipcode':['98039'],\n'condition':[10],\n'grade':[10],\n'waterfront':[1],\n'view':[4],\n'sqft_above':[37500],\n'sqft_basement':[12500],\n'yr_built':[1994],\n'yr_renovated':[2010],\n'lat':[47.627606],\n'long':[-122.242054],\n'sqft_living15':[5000],\n'sqft_lot15':[40000]}"}, {'role': 'assistant', 'content': 'data_preprocessing'}]