[{'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:plt.figure(figsize=(30, 15))\nnx.draw_networkx_nodes(H, spring_pos, node_color=H_colors, alpha=0.2, node_size=8)\nnx.draw_networkx_edges(H, spring_pos, alpha=0.1)\nnx.draw_networkx_nodes(H_new, spring_pos, node_color=H_new_colors, alpha=0.3, node_size=254)\nnx.draw_networkx_labels(H_new, spring_pos, font_size=12)\nplt.title('US purchases of political books', size=15)\nplt.axis('off')\nplt.show()"}, {'role': 'assistant', 'content': 'data_exploration'}]