1 1 0 http://purl.obolibrary.org/obo/PLANA_0007503 head margin sagittal plane of the whole animal 'head margin' SubClassOf 'dorsal ventral margin of the whole animal' 'head margin' SubClassOf 'continuant' 'head margin' SubClassOf 'part of' some 'whole organism' http://purl.obolibrary.org/obo/PLANA_0007561 head margin 'head margin' SubClassOf 'dorsal ventral margin of the whole animal'