[{'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:# Specify all features for prediction\nx_features_drop = ['ConfirmedCases', 'Fatalities', 'Date', 'date']\ny_target1 = ['ConfirmedCases']\ny_target2 = ['Fatalities']\n\n# Assign features into X, y1, y2 for training and testing\nX = train_df_encoded.drop(x_features_drop, axis=1)\ny1 = train_df_encoded[y_target1]\ny2 = train_df_encoded[y_target2]\n\ndisplay(X.head())\ndisplay(y1.tail())\ndisplay(y2.tail())"}, {'role': 'assistant', 'content': 'data_preprocessing'}]