[{'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:nb_fp = filtered_pluto[filtered_pluto['Borough'] == 'Queens']\nnb_fp = nb_fp[nb_fp['Address'].map(lambda a: 'NORTHERN BOULEVARD' in a)]\nnb_fp_1 = nb_fp[nb_fp['XCoord'] < 1025000]\nnb_fp_2 = nb_fp[nb_fp['XCoord'] > 1025000]\nnorthern_1 = generate(nb_fp_1, pnyc, 'NORTHERN BOULEVARD', n=10)\nnorthern_2 = generate(nb_fp_2, pnyc, 'NORTHERN BOULEVARD', n=10)\nnorthern = np.concatenate((northern_1, northern_2))\ndistance(northern)"}, {'role': 'assistant', 'content': 'data_preprocessing'}]