No, not only a UML class diagram, but...
If we define a boundary is an area in space
and a location is a point in space ...
This paragraph describes the entities and their relationships. You can model that with a class diagram.
Given boundary 4 is owned by boundary 3...
and Given boundary 4 is owned by boundary 3...
These paragraphs describe objects and their associations. You can describe that with a object diagrams. Obviously, the relationships between the objects in these two object diagrams should conform to the relationships of the classes presented in the class diagram.
Given boundary 7 is owned by boundaries 5 and 6 (i.e. shared)...
You can describe this as well with an object diagram.
When I attempt to attach location C to either boundary 5 or 6 Then the attempt will not be successful
. Obviously, trying to change the object associations like that would produce an object diagram that violates the relationships defined in the class diagram.
This what this (obviously school exercise) is about, drawing a class diagram that visualizes the relationships between classes and some object diagrams that visualize the associations between specific instances of these classes.