A is related to B iff there is some relation between A and B. 'is related to' is the top level relation in SIO core relations+ is related to has attribute is a relation that associates a entity with an attribute where an attribute is an intrinsic characteristic such as a quality, capability, disposition, function, or is an externally derived attribute determined from some descriptor (e.g. a quantity, position, label/identifier) either directly or indirectly through generalization of entities of the same type. core has attribute has member is a mereological relation between a collection and an item. core has member a collection of cars has as a car as a member A is located in B iff the spatialtemporial region occupied by A is part of the spatialtemporal region occupied by B. [T][R] OBO_REL:located_in core is located in A parasite in the interior of a person's intestine is located in their intestinal lumen. is part of is a transitive, reflexive and anti-symmetric mereological relation between a whole and itself or a part and its whole. OBO_REL:part_of core is part of is proper part of is an asymmetric, irreflexive (normally transitive) relation between a part and its distinct whole. OBO_REL:proper_part_of core is proper part of A is contained in B iff the spatial region occupied by A is part of the spatial region occupied by B and A is not part of B. [T] OBO_REL:contained_in core is contained in has participant is a relation that describes the participation of the object in the (processual) subject. OBO_REL:has_participant core has participant has agent is a relation between a process and an entity, where the entity is present throughout the process and is a causal participant in the process. OBO_REL:has_agent core sadi has agent interacts with A is connected to B iff there exists a fiat, material or temporal path between A and B. [S][T] core nlp is connected to A is adjacent to B iff there is a small, but non-zero distance between A and B OBO_REL:adjacent_to core nlp is adjacent to a represents b when a serves as a sign, symbol or model of b. core represents has measurement value is a relation between a quality/realizable and a measurement value. core has measurement value has unit is a relation between a quantity and the unit it is a multiple of. core has unit has output is a relation between an process and an entity, where the entity is present at the end of the process. core sadi has output has input is a relation between a process and an entity, where the entity is present at the beginning of the process. core sadi has input A transitive, symmetric, temporal relation in which one entity is causally related with another non-identical entity. core is causally related with A transitive temporal relation in which one entity was materially formed from another non-identical entity. OBO_REL:derives_from core is derived from A transitive, temporal relation in which one process precedes (has occured earlier than) another process. core precedes is variant of: a relationship indicating that two entities are different (by some measure), but either achieve the same objectives in different ways or are permutations of one another (temporal, logical or otherwise) core is variant of is direct part of is a relation between a specific part (at some level of granularity) and its whole. core is direct part of is component part of is a relation between a component and a whole, where the component is instrinsic to the whole, and loss of the part would change the kind that the whole is. core is component part of A is spatiotemporally related to B iff A is in the spatial or temporal vicinity of B core is spatiotemporally related to a is causally related from b iff there is a causal chain of events from b to a core is causally related from realizes is a relation between a process and a realizable entity (role, function, disposition). core realizes describes is a relation between one entity and another entity that it provides a description (detailed account of). core describes refers to is a relation between one entity and the entity that it makes reference to. core nlp+ refers to mentions references is a relation between one entity and the entity that it makes reference to by name, but is not described by it. core references in relation to is a comparative relation to indicate that the instance of the class holding the relation exists in relation to another entity. core in relation to exists at is a relation between an entity and a time measurement. core exists at is comparable to is a relation between two entities that share at least one feature whose value can be compared. core is comparable to measured at is a relation between a measurement value and the time measurement. core measured at has data item is a relation between a dataset and any described / referrenced entity. core has data item 'is data item in' is a relation between an entity that is described or referenced in a dataset. core is data item in A relation between a informational entity and its actual value (numeric, date, text, etc). core nlp relations sadi has value Every thing is an entity. core entity A material entity is a physical entity that is spatially extended, exists as a whole at any point in time and has mass. core material entity A quality is an attribute that is intrinsically associated with its bearer (or its parts), but whose presence/absence and observed/measured value may vary. core quality A process is an entity that is identifiable only through the unfolding of time, has temporal parts, and unless otherwise specified/predicted, cannot be identified from any instant of time in which it exists. core process+ process A disposition is the tendency of a capability to be exhibited under certain conditions or in response to a certain stimulus (trigger). core disposition solubility (to dissolve when put in fluid); fragility (disposition to break when dropped) information content entity is an object that requires some background knowledge or procedure to correctly interpret. core ice+ information content entity A role is a realizable entity that describes behaviours, rights and obligations of an entity in some particular circumstance. core role A function is a capability that satisfies some agentive objective, or (evolutionary) optimization. core function A capability is a realizable entity whose basis lies in one or more parts or qualities and reflects possibility of an entity to behave in a specified way under certain conditions or in response to a certain stimulus (trigger). capability+ core capability A realizable entity is an attribute that is exhibited under some condition and is realized in some process. core realizable entity movement is the process in which an object is spatially displaced. core movement interacting is a process characterized by the interaction between two or more entities. core interacting An attribute is a characteristic of some entity. core attribute An object is an entity that is wholly identifiable at any instant of time during which it exists. core object Behaviour is the set of actions and mannerisms made by systems (biological or otherwise) in response to stimuli or inputs, whether internal or external, conscious or subconscious, overt or covert, and voluntary or involuntary. behaviour+ core behaviour sio-subset-core.owl