14. The computer program product of claim 13 , wherein modifying the child context comprises adding the child context to the context hierarchy.
13. The computer program product of claim 9 , wherein the method further comprises: reacting data values of sensors from the sensor network associated with a parent context, wherein the parent context is a dynamic context; and modifying a child context of the parent context, automatically by the parent context, based on the data values of the sensors from the sensor network associated with the parent context.