The Suggested Upper Merged Ontology (SUMO) is another comprehensive ontology project. An ontological argument is a philosophical argument for the existence of God that uses ontology. The term has different meanings in metaphysics, ontology, epistemology and logic. In this way, structuration theory prioritizes ontology over epistemology. Jain philosophy deals extensively with the problems of metaphysics, reality, cosmology, ontology, epistemology and divinity. Kierkegaard disputes this assertion, because it eliminates the clear distinction between ontology and epistemology. Nietzsche applied himself to such topics as morality, religion, epistemology, psychology, ontology, and social criticism. Logic has been applied to categories such as taxonomy, ontology, assessment, and hierarchies. He develops his philosophy over four books covering epistemology, ontology, aesthetics, and ethics. The context links object properties in a JSON document to concepts in an ontology. Yet to confuse phenomenology and ontology is an obvious error. She combined realist ontology and called her methodology "analytical dualism". This syntax closely follows the structure of an OWL2 ontology. OWL2 specifies an XML serialization that closely models the structure of an OWL2 ontology. Materialism belongs to the class of monist ontology.