# Step 1: Download
if not DATA_DIR.exists() or next(DATA_DIR.iterdir(), None) is None:
DATA_DIR.mkdir(exist_ok=True, parents=True)
gdown.cached_download("https://drive.google.com/u/0/uc?id=1zTfDFCl1nf_giX7IniY5WbXi9tAuEHDn",
DATA_DIR / "data-release.zip")