“…As the semantic annotation and enrichment of moving objects and their trajectories is performed in a semantic way, the use of ontologies definitely can play a key role, as well as semantic web standards (e.g., RDFS, OWL) and related technologies, such as reasoners (Dentler, Cornet, ten Teije, & de Keizer, 2011;Mishra & Kumar, 2011). Services that a moving object can access, or can find interesting at a certain moment, depend on the continuously changing context, i.e., a contextual trajectory; the relevant services may change or behave differently according to the changes in the context.…”