How can i remove elements without relationships?

[huxuxuya]

Hi.
I want to make view with relationships of components between two systems.
I can add all elements in view:
include ->element.parent==system1
include ->element.parent==system2

after that i got all elements with incoming connections for elements of system1 and system2
amd perfect relationships between them
but in view has elements without relationships. How can i delete all elements without relationships on view?

[simonbrowndotje]

It might be easier to answer your question with an example DSL file.