Hi. I was looking at the files available to download, and I see the following under training data. BraTS2021_00495.zip BraTS2021_00621.zip BraTS21-17_Mapping.csv RSNA_ASNR_MICCAI_BraTS2021_TrainingData_20210706.zip The description of the data says that ground-truth labels (0, 1, 2, 4) were established by experts, but it is not clear to me where these labels can be found. I looked in the TrainingData zip file and only found folders containing .nii.gz files. Do I have a misunderstanding on what the dataset actually contains, or am I not looking in the correct place? Or perhaps I have missed something else? Thanks.