. _:vb940975 . _:vb941001 . . . _:vb941002 . "'Constituency' depends on some layering of the world described by the ontology. For example, scientific granularities (e.g. body-organ-tissue-cell) or ontological 'strata' (e.g. social-mental-biological-physical) are typical layerings. \nIntuitively, a constituent is a part belonging to a lower layer. Since layering is actually a partition of the world described by the ontology, constituents are not properly classified as parts, although this kinship can be intuitive for common sense.\nA desirable advantage of this distinction is that we are able to talk e.g. of physical constituents of non-physical objects (e.g. systems), while this is not possible in terms of parts.\nExample of are the persons constituting a social system, the molecules constituting a person, the atoms constituting a river, etc. \nIn all these examples, we notice a typical discontinuity between the constituted and the constituent object: e.g. a social system is conceptualized at a different layer from the persons that constitute it, a person is conceptualized at a different layer from the molecules that constitute them, and a river is conceptualized at a different layer from the atoms that constitute it."^^ . "has constituent" . _:vb940978 . . _:vb940953 . "ha costituente" . _:vb940921 . . .