[{'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:SPC = pd.read_csv('SPC.csv')\nSPD = pd.read_csv('SPSFC_NA.csv')\nSPD = SPD[['year','month','day','hour','temp']]\nROC = pd.read_csv('ROC.csv')\nROD = pd.read_csv('ROSFC_NA.csv')\nROD = ROD[['year','month','day','hour','temp']]"}, {'role': 'assistant', 'content': 'load_data'}]