part_of part of part of connects connects https://github.com/obophenotype/uberon/wiki/Connectivity-Design-Pattern https://github.com/obophenotype/uberon/wiki/Modeling-articulations-Design-Pattern this is currently used for both structural relationships (such as between a valve and the chamber it connects) and abstract relationships (anatomical lines and the entities they connect) uberon c connects a if and only if there exist some b such that a and b are similar parts of the same system, and c connects b, specifically, c connects a with b. When one structure connects two others it unites some aspect of the function or role they play within the system. a 'toe distal phalanx bone' that is connected to a 'toe medial phalanx bone' (an interphalangeal joint *connects* these two bones). Binary relationship: z connects x if and only if there exists some y such that z connects x and y in a ternary connected_to(x,y,z) relationship. connects The M8 connects Glasgow and Edinburgh connects RO:0002176 mereotopologically related to independent continuant system