12. The system according to claim 11 , wherein the at least one spatial predicate of a reference spatial object includes: (a) a task-relevant spatial object or a concept of the task-relevant spatial objects; and (b) at least one spatial relationship between the reference spatial object and the task-relevant spatial object or at least one spatial relationship between the reference spatial object and the concept of task-relevant spatial objects.
12. The system according to claim 11 , wherein the at least one spatial predicate of a reference spatial object includes: (a) a task-relevant spatial object or a concept of the task-relevant spatial objects; and (b) at least one spatial relationship between the reference spatial object and the task-relevant spatial object or at least one spatial relationship between the reference spatial object and the concept of task-relevant spatial objects. 13. The system according to claim 12 , wherein the at least one spatial relationship includes one or more of: a topological relationship, a metrical relationship, and a directional relationship, the topological relationship including one of: an intersection, an adjacency, and an inclusion, the metrical relationship including one of: a distance, an area, and a closeness, the directional relationship including one of: above, behind, north, west, east, south, northeast, southwest, northwest, and southeast.