Starting from an instance set

When you are not navigating from the local instance, you need to be explicit about the originating instance set.

bigdog breeds ..= Breed( Max height > big threshold )
bigdog owners ..= bigdog breeds/specifies/Dog/is owned by/Owner

In the above example that path expression begins with a labeled instance set flow and then traverses from there across two associations to yield a set of related Owner instances.

If the originating instance set is empty, the empty set will be returned regardless of the remainder of the path.