A method for obtaining contextually related instances. The method comprises providing a map of a plurality of contextual relations between a plurality of instance types and a plurality of functionalities. Each one of the functionalities is associated with one of the mapped contextual relations and configured for providing one or more instances of a respective type. The method further comprises receiving a contextual linkage between a known instance and a requested instance, identifying a match between the contextual linkage and a segment of the map, and obtaining the requested instance by using the known instance along with a group of which is selected from the functionalities; each member of the group is associated with a contextual relation in the segment.