Fig. 5.

Instance-based semantic graph of a morphological observation process using a microscope. An instance-based semantic graph documenting a morphological observation process using a microscope, stored in a named graph instance of the ontology class ‘assay data named graph’. The graph relates an instance of ‘microscopy assay’ of IAO with instances of various other ontology classes from OBI and IAO, specifying who conducted the observation, where and when it took place, following which protocol and using which device (i.e., microscope). The semantic graph furthermore specifies the particular material entity that served as subject and thus as input of the observation process (i.e., the particular specimen), and it specifies the data that is the output of the observation, which is contained in one or more named graph instances, each being a part of an Anatomy Knowledge Graph. For reasons of clarity, resources are not represented with their URIs but with labels. Purple-bordered box = ontology individual; purple-bordered grey box = named graph instance; yellow-bordered box with rounded corners = ontology class; arrow = property