根据一组给定的数据训练一个分类模型，并使用该模型对新数据进行分类。 
数据集的详细描述和要预测的类别，例如，“基于手写数字的数据集，要预测数字1和数字7。”
Train a classification model based on a given dataset and use the model to classify new data. The detailed description of the dataset and the predicted class, for example "a dataset based on handwritten digits, predicting the number 1 and number 7."