Landform classifiers	Hierarchical Event Descriptors	Source
http://purl.org/hed/releases/2024-06-10/hed/HED_0012594	http://anzsoil.org/def/au/asls/landform/relief-class-L	LOOM
http://purl.org/hed/releases/2024-06-10/hed/HED_0012600	http://anzsoil.org/def/au/asls/landform/stream-channel-relative-depth-width-S	LOOM
http://purl.org/hed/releases/2024-06-10/hed/HED_0012588	http://anzsoil.org/def/au/asls/landform/stream-channel-relative-depth-width-D	LOOM
http://purl.org/hed/releases/2024-06-10/hed/HED_0012589	http://anzsoil.org/def/au/asls/landform/relief-class-H	LOOM