Template MetricSpacePoint?

This Template is for defining a location in 2 or 3D Metric Space

Roles:
1 hasObject MetricSpacePoint?
2 ValX ExpressReal?
3 ValY ExpressReal?
4 ValZ ExpressReal?

Example:
MetricSpacePoint?(p101, 2000.0, 1000.0, 500.0

The location of the object p101