Property information
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.
example of usage
a 'toe distal phalanx bone' that is connected to a 'toe medial phalanx bone' (an interphalangeal joint *connects* these two bones).
The M8 connects Glasgow and Edinburgh
see also
https://github.com/obophenotype/uberon/wiki/Modeling-articulations-Design-Pattern
https://github.com/obophenotype/uberon/wiki/Connectivity-Design-Pattern