[{'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:from datetime import datetime\nextents = {\n"deforestation_bangladesh":{\n"longitude": (90.02882710688932, 90.04410381279332),\n"latitude":  (25.22213617305038, 25.23477198147955),\n"product" : "ls7_ledaps_bangladesh",\n"platform": "LANDSAT_7",\n"measurements": [\'red\',\'green\',\'blue\',\'nir\',\'swir1\',\'swir2\',\'cf_mask\'],\n"time": (datetime(2006,1,1), datetime.max)\n}\n}'}, {'role': 'assistant', 'content': 'helper_functions'}]